Posted October 2005 - 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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    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.).
   
    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.
   
    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).
   
    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.
   
    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).
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    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.
   
    292 Polyimide sheet or film:
  This subclass is indented under subclass 286.  Subject matter wherein the preformed polymeric film or sheet is a polyimide.
   
    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.
   
    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.
   
    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.
   
    296 Mica paper layer:
  This subclass is indented under subclass 295.  Subject matter wherein the paper is formed from mica.
   
    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.
   
    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.
   
    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.
   
    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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