3549789

Information

• Patent Grant
• 3549789

• References
• Source

• Patent Number

  3,549,789

• Date Filed

  Not available

• Date Issued

  Tuesday, December 22, 1970
  54 years ago

• CPC

  • D21H13/26 - Polyamides Polyimides
  • D21H5/1281 - by chemical treatment
  • D21H25/02 - Chemical or biochemical treatment
  • Y10T428/31728 - Next to second layer of polyamide

• US Classifications

  • 174 - Electricity: conductors and insulators
  • 008 - Bleaching and dyeing
  • 156 - Adhesive bonding and miscellaneous chemical manufacture
  • 162 - Paper making and fiber liberation
  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 428 - Stock material or miscellaneous articles
  • 493 - Manufacturing container or tube from paper