2224992

Information

• Patent Grant
• 2224992

• References
• Source

• Patent Number

  2,224,992

• Date Filed

  Not available

• Date Issued

  Tuesday, December 17, 1940
  84 years ago

• CPC

  • D06M15/41 - Phenol-aldehyde or phenol-ketone resins
  • D04H1/642 - characterised by the impregnation or treatment-process or apparatus
  • D21H23/72 - Plural serial stages only
  • D21H17/02 - Material of vegetable origin
  • D21H17/06 - Alcohols Phenols Ethers Aldehydes Ketones Acetals Ketals
  • D21H17/46 - obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
  • D21H17/48 - with phenols
  • D21H21/38 - Corrosion-inhibiting agents or anti-oxidants
  • D21H23/42 - Paper being at least partly surrounded by the material on both sides
  • D21H23/50 - Spraying or projecting
  • D21H23/56 - Rolls
  • Y10T428/31652 - Of asbestos
  • Y10T428/31844 - Of natural gum, rosin, natural oil or lac
  • Y10T442/2369 - Coating or impregnation improves elasticity, bendability, resiliency, flexibility, or shape retention of the fabric
  • Y10T442/3472 - Woven fabric including an additional woven fabric layer
  • Y10T442/50 - FELT FABRIC

• US Classifications

  • 442 - Fabric
  • 156 - Adhesive bonding and miscellaneous chemical manufacture
  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 427 - Coating processes
  • 428 - Stock material or miscellaneous articles