3816335

Information

• Patent Grant
• 3816335

• References
• Source

• Patent Number

  3,816,335

• Date Filed

  Not available

• Date Issued

  Tuesday, June 11, 1974
  50 years ago

• CPC

  • G01N31/22 - using chemical indicators
  • B29C61/003 - characterised by the choice of material
  • B41M5/283 - Inorganic thermochromic compounds
  • C08F8/00 - Chemical modification by after-treatment
  • C08F8/44 - Preparation of metal salts or ammonium salts
  • C08K3/0008 - Inorganic ingredients according to more than one of the "one dot" groups of C08K3/02 - C08K3/40
  • B29K2096/005 - Ionomers
  • B29K2995/0026 - Transparent
  • B29K2995/0029 - Translucent

• US Classifications

  • 436 - Chemistry: analytical and immunological testing
  • 252 - Compositions
  • 374 - Thermal measuring and testing