1520442

Information

• Patent Grant
• 1520442

• References
• Source

• Patent Number

  1,520,442

• Date Filed

  Not available

• Date Issued

  Tuesday, December 23, 1924
  100 years ago

• CPC

  • B27K3/52 - Impregnating agents containing mixtures of inorganic and organic compounds
  • B27K3/0242 - using melt impregnation
  • B27K3/20 - Compounds of alkali metals or ammonium
  • B27K3/34 - Organic impregnating agents
  • B27K3/36 - Aliphatic compounds

• US Classifications

  • 106 - Compositions: coating or plastic
  • 514 - Drug, bio-affecting and body treating compositions