3850680

Information

• Patent Grant
• 3850680

• References
• Source

• Patent Number

  3,850,680

• Date Filed

  Not available

• Date Issued

  Tuesday, November 26, 1974
  50 years ago

• CPC

  • E04C2/043 - of plaster
  • C09D131/04 - Homopolymers or copolymers of vinyl acetate
  • C09D191/06 - Waxes
  • E04B2/8605 - without spacers
  • C08L91/06 - Waxes
  • Y10T428/31808 - Cellulosic is paper
  • Y10T428/31906 - Ester, halide or nitrile of addition polymer
  • Y10T428/31996 - Next to layer of metal salt [e.g., plasterboard, etc.]

• US Classifications

  • 427 - Coating processes