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Posted October 20005 - this information is "posted" by Apparel Search, but it has not been created by Apparel Search
This may be dated material and you should not rely on this list to be the most current listing of this information.  We suggest that if you require the most current and accurate information, you communicate directly with the United States Patent and Trademark Office.
The following file was produced by USPTO - SIRA - Office of Patent Automation - Reference Tools Project

Contact: United States Patent and Trademark Office - Classification Operations Crystal Park 3, Suite 902 Washington, DC 20231 phone: (703) 305-5107

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[List of Patents for class 442 subclass 250]  250 Woven fabric layers impregnated with a natural or synthetic rubber:
  This subclass is indented under subclass 246.  Subject matter wherein the layers have been impregnated with a natural or synthetic rubber.
   
[List of Patents for class 442 subclass 251]  251 Woven fabric layers impregnated with a thermosetting resin:
  This subclass is indented under subclass 246.  Subject matter wherein the fabric layers have been impregnated with a resin which hardens when subjected to heating conditions.
   
[List of Patents for class 442 subclass 252]  252 Phenolic resin:
  This subclass is indented under subclass 251.  Subject matter wherein the thermosetting resin is produced by condensing an aldehyde or ketone with a phenol or phenolate.
   
[List of Patents for class 442 subclass 253]  253 Epoxy resin:
  This subclass is indented under subclass 251.  Subject matter wherein the thermosetting resin is produced by reacting an epoxide (e.g., epichlorohydrin, etc.) and a polyol (e.g., bisphenol, etc.) or alcoholate thereof.
   
[List of Patents for class 442 subclass 254]  254 Woven fabric layers impregnated with a thermoplastic resin (e.g., vinyl polymer, etc.):
  This subclass is indented under subclass 246.  Subject matter wherein the woven fabric layers have been impregnated with a resin which is rendered soft and moldable under heating conditions such as vinyl polymer.
   
[List of Patents for class 442 subclass 255]  255 Three or more distinct layers:
  This subclass is indented under subclass 239. Subject matter wherein the woven fabric is combined with two or more additional distinct layers.
   
[List of Patents for class 442 subclass 256]  256 At least one layer is derived from water-settable material (e.g., cement, gypsum, etc.):
  This subclass is indented under subclass 255.  Subject matter wherein at least one layer contains a water-settable material (e.g., cement, gypsum, etc.) which forms a distinct layer.
   
[List of Patents for class 442 subclass 257]  257 At least one layer contains wood or cork:
  This subclass is indented under subclass 255. Subject matter wherein at least one layer comprises a material derived from the structural element of a tree or shrub or the bark of a tree.
   
[List of Patents for class 442 subclass 258]  258 At least one layer contains bituminous material (e.g., tar pitch, asphalt, etc.):
  This subclass is indented under subclass 255.  Subject matter wherein at least one layer is disclosed as being pitch, asphalt, tar, bitumen, or the residue from the distillation of mineral oil and/or coal.
   
[List of Patents for class 442 subclass 259]  259 At least one layer comprises paper:
  This subclass is indented under subclass 255. Subject matter wherein at least one layer comprises a sheet or web having structural integrity formed by the deposition of animal, vegetable, mineral, or synthetic fibers or mixtures thereof from a fluid suspension or dispersion which may or may not contain additional materials.
   
[List of Patents for class 442 subclass 260]  260 At least one layer contains natural or synthetic rubber:
  This subclass is indented under subclass 255. Subject matter wherein at least one layer comprises a natural or synthetic rubber.
   
[List of Patents for class 442 subclass 261]  261 At least one layer is a preformed synthetic polymeric film or sheet:
  This subclass is indented under subclass 255.  Subject matter wherein at least one of the additional layers comprises a preformed synthetic polymer which is in the form of a film, foil, or sheet having had structural integrity prior to its association with the fabric.
   
[List of Patents for class 442 subclass 262]  262 At least one layer comprises ceramic or glass material in other than particulate form:
  This subclass is indented under subclass 255.  Subject matter wherein at least one layer comprises compound in non-particulate form composed of one or more fired non-metallic inorganic compounds or one or more fused metallic silicates.
   
[List of Patents for class 442 subclass 263]  263 Composite consisting of at least two woven fabrics bonded by an interposed adhesive layer (but not two woven fabrics bonded together by an impregnation which penetrates through the thickness of at least one of the woven fabric layers):
 This subclass is indented under subclass 255.  Subject matter characterized by the presence of at least two juxtaposed woven fabric layers with a distinct adhesive layer interposed therebetween.
  (1) Note. The adhesive layer is not provided by an impregnation penetrating through the thickness of at least one of the woven fabric layers.
  
[List of Patents for class 442 subclass 264]  264 Fabric layer contains natural strand material:
  This subclass is indented under subclass 263.  Subject matter wherein at least one fabric layer contains animal (e.g., wool, silk, etc.), vegetable (e.g, cotton, flax, etc.), or mineral (e.g., asbestos, etc.) naturally occurring filamentary material.
   
[List of Patents for class 442 subclass 265]  265 Fabric layer contains carbon or carbonaceous strand material:
  This subclass is indented under subclass 263.  Subject matter wherein at least one fabric layer contains carbon (graphite) stran material or a high tensile strength, stiff filamentary material produced by heating the filamentary material under conditions tending to remove all elements but carbon.
   
[List of Patents for class 442 subclass 266]  266 Fabric layer contains glass strand material:
  This subclass is indented under subclass 263.  Subject matter wherein at least one fabric layer is composed of strand material comprising filamentary material produced by spinning molten glass.
   
[List of Patents for class 442 subclass 267]  267 Including particulate material other than fiber:
  This subclass is indented under subclass 255.  Subject matter wherein at least one of the layers contains particulate material which is not fiber.
   
[List of Patents for class 442 subclass 268]  268 Woven fabric including a nonwoven fabric other than paper:
  This subclass is indented under subclass 181.  Subject matter wherein the woven fabric is in association with a nonwoven fabric, which is not paper.
   
[List of Patents for class 442 subclass 269]  269 Nonwoven fabric layer comprises parallel arrays of strand material:
  This subclass is indented under subclass 268. Subject matter wherein the nonwoven fabric comprises strand material which has been oriented in a particular direction, the strand material components being parallel to one another.
   
[List of Patents for class 442 subclass 270]  270 Needled:
 This subclass is indented under subclass 268. Subject matter wherein the fabric layers have been adhered to one another by a mechanical needling.
  (1) Note. In a mechanical needling process, barbed needles are forced through fibrous layers and in the process displace enough fibers to cause interlayer penetration of fibers and fiber layer bonding as a consequence of interlayer fiber friction.
  
[List of Patents for class 442 subclass 271]  271 Including an additional nonwoven fabric:
  This subclass is indented under subclass 270.  Subject matter characterized by the presence of two or more nonwoven fabrics which are not paper.
   
[List of Patents for class 442 subclass 272]  272 Additional nonwoven fabric comprises chemically different strand material than the first nonwoven fabric:
  This subclass is indented under subclass 271.  Subject matter wherein the chemical characteristics of the strand material comprising two different nonwoven fabrics are distinctly different.
   
[List of Patents for class 442 subclass 273]  273 Including inorganic strand material:
  This subclass is indented under subclass 271. Subject matter wherein at least one of the nonwoven fabrics is composed of strand material which is inorganic (e.g., glass, ceramic, carbon, etc.).
   
[List of Patents for class 442 subclass 274]  274 Nonwoven fabric layer comprises at least two chemically different fibers:
  This subclass is indented under subclass 270.  Subject matter wherein the nonwoven fabric layer contains two or more fibrous materials having distinctly different chemical characteristics.
   
[List of Patents for class 442 subclass 275]  275 Coated, impregnated, or autogenously bonded:
  This subclass is indented under subclass 270.  Subject matter wherein at least one layer has been coated or impregnated or subjected to autogenous bonding (i.e., wherein strand or filamentary components have been caused to adhere to one another through activation of an inherent cohesive or adhesive property by heat and/or pressure or application of solvent).
   
[List of Patents for class 442 subclass 276]  276 Hydroentangled:
 This subclass is indented under subclass 268.  Subject matter wherein the fabric layers have been adhered to one another by hydroentangling.
  (1) Note. In a hydroentangling process, liquid streams impinge against fibrous layers and penetrate thereinto and in the process displace enough fibers to cause interlayer penetration of fibers and fiber layer bonding as a consequence of interlayer fiber friction.
  
[List of Patents for class 442 subclass 277]  277 Coated, impregnated, or autogenously bonded:
  This subclass is indented under subclass 268.  Subject matter wherein at least one layer has been coated or impregnated or subjected to autogenous bonding (i.e., wherein strand or filamentary components have been caused to adhere to one another through activation of an inherent cohesive or adhesive property by heat and/or pressure or application of solvent).
   
[List of Patents for class 442 subclass 278]  278 Plural nonwoven fabric layers:
  This subclass is indented under subclass 277. Subject matter wherein at least two nonwoven fabric layers which are not paper are associated with a woven fabric layer.
   
[List of Patents for class 442 subclass 279]  279 Coating or impregnation is derived from a water-settable material (e.g., cement, gypsum, etc.):
  This subclass is indented under subclass 277.  Subject matter wherein the coating or impregnation is a water-settable material (e.g., cement, gypsum, etc.) which forms a distinct layer.
   
[List of Patents for class 442 subclass 280]  280 Coating or impregnation contains natural or synthetic rubber:
  This subclass is indented under subclass 277.  Subject matter wherein the coating or impregnation includes natural or synthetic rubber.
   
[List of Patents for class 442 subclass 281]  281 Coating or impregnation contains synthetic polymeric material:
  This subclass is indented under subclass 277.  Subject matter wherein at least one fabric layer has been coated or impregnated with a polymeric material, the polymeric material being synthetic.
   
[List of Patents for class 442 subclass 282]  282 Coating or impregnation contains bituminous material:
  This subclass is indented under subclass 277.  Subject matter wherein at least one layer is disclosed as being coated or impregnated with a pitch, asphalt, tar, bitumen, or the residue from the distillation of mineral oil and/or coal.
   
[List of Patents for class 442 subclass 283]  283 Four or more layers:
  This subclass is indented under subclass 277.  Subject matter wherein at least four distinct layers are associated together including a woven fabric layer and at least one nonwoven fabric layer, the coating or impregnation may constitute at least one layer.
   
[List of Patents for class 442 subclass 284]  284 Including particulate material other than fiber:
  This subclass is indented under subclass 283.  Subject matter wherein at least one of the four layers contains particulate material which is not fiber.
   
[List of Patents for class 442 subclass 285]  285 Including particulate material other than fiber:
  This subclass is indented under subclass 277.  Subject matter wherein a woven fabric layer, a nonwoven fabric layer, and a coating or impregnation layer are associated together and at least one of the above mentioned layers contains particulate material which is not fiber.
   
[List of Patents for class 442 subclass 286]  286 Woven fabric with a preformed polymeric film or sheet:
  This subclass is indented under subclass 181.  Subject matter which is associated with at least one additional preformed layer having had structural integrity prior to association with the fabric and which maintains its structural integrity after association with the fabric, the preformed layer being formed from a synthetic polymeric material which is in the form of a film or sheet.
   
[List of Patents for class 442 subclass 287]  287 Ester condensation polymer sheet or film (e.g., polyethylene terephthalate, etc.):
  This subclass is indented under subclass 286.  Subject matter wherein the preformed polymeric film or sheet is an ester condensation product such as polyethylene terephthalate, etc.
   
[List of Patents for class 442 subclass 288]  288 Vinyl polymer or copolymer sheet or film (e.g., polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate, etc.):
  This subclass is indented under subclass 286.  Subject matter wherein the preformed polymeric film or sheet is a vinyl polymer or copolymer such as polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate, etc.
   
[List of Patents for class 442 subclass 289]  289 Fluorinated olefin polymer or copolymer sheet or film (e.g., Teflon&4121;):
  This subclass is indented under subclass 286.  Subject matter wherein the preformed polymeric film or sheet is a fluorinated olefin polymer or copolymer such as Teflon&4121;, etc.
   
[List of Patents for class 442 subclass 290]  290 Olefin polymer or copolymer sheet or film (e.g., polypropylene, polyethylene, ethylene-butylene copolymer, etc.):
  This subclass is indented under subclass 286.  Subject matter wherein the preformed polymeric film or sheet is an olefin polymer or copolymer such as polypropylene, polyethylene, ethylene-butylene copolymer, etc.
   
[List of Patents for class 442 subclass 291]  291 Amide condensation polymer sheet or film (e.g., nylon 6, etc.):
  This subclass is indented under subclass 286.  Subject matter wherein the preformed polymeric film or sheet is an amide condensation polymer such as nylon 6, etc.
   
[List of Patents for class 442 subclass 292]  292 Polyimide sheet or film:
  This subclass is indented under subclass 286. Subject matter wherein the preformed polymeric film or sheet is a polyimide.
   
[List of Patents for class 442 subclass 293]  293 Natural or synthetic rubber sheet or film:
  This subclass is indented under subclass 286. Subject matter wherein the preformed polymeric film or sheet is natural or synthetic rubber.
   
[List of Patents for class 442 subclass 294]  294 Including particulate material other than fiber:
  This subclass is indented under subclass 286.  Subject matter wherein the preformed polymeric film or sheet or the woven fabric associated therewith contains particulate material which is not fiber.
   
[List of Patents for class 442 subclass 295]  295 Including a paper or wood pulp layer:
  This subclass is indented under subclass 181. Subject matter wherein the woven fabric is associated with an additional layer comprising a sheet or web having structural integrity formed by the deposition of animal, vegetable, mineral, or synthetic fibers or mixtures thereof from a fluid suspension or dispersion which may or may not contain additional materials.
   
[List of Patents for class 442 subclass 296]  296 Mica paper layer:
  This subclass is indented under subclass 295. Subject matter wherein the paper is formed from mica.
   
[List of Patents for class 442 subclass 297]  297 Plural paper or wood pulp layers:
  This subclass is indented under subclass 295. Subject matter wherein the woven fabric is associated with two or more additional layers comprising a sheet or web having structural integrity formed by the deposition of animal, vegetable, mineral, or synthetic fibers or mixtures thereof from a fluid suspension or dispersion which may or may not contain additional materials.
   
[List of Patents for class 442 subclass 298]  298 Including a bituminous layer:
  This subclass is indented under subclass 295.  Subject matter wherein at least one layer is disclosed as being coated or impregnated with a pitch, asphalt, tar, bitumen, or the residue from the distillation of mineral oil and/or coal.
   
[List of Patents for class 442 subclass 299]  299 Including an outermost adhesive layer:
  This subclass is indented under subclass 295. Subject matter wherein an outer surface of the woven fabric and/or the paper or wood pulp layer has associated therewith an adhesive layer.
   
[List of Patents for class 442 subclass 300]  300 Including a natural or synthetic rubber layer:
  This subclass is indented under subclass 295.  Subject matter wherein the woven fabric and/or the paper or wood pulp layer has associated therewith a natural or synthetic rubber layer in the form of a coating, impregnation, or separate and distinct layer.

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