3825507

Information

• Patent Grant
• 3825507

• References
• Source

• Patent Number

  3,825,507

• Date Filed

  Not available

• Date Issued

  Tuesday, July 23, 1974
  50 years ago

• CPC

  • C07D213/20 - Quaternary compounds thereof
  • B41M5/0253 - using a chemical colour-forming ink
  • B41M5/136 - Organic colour formers
  • C07C255/00 - Carboxylic acid nitriles
  • C07D213/38 - having only hydrogen, hydrocarbon radicals attached to the substituent nitrogen atom
  • C07D213/74 - Amino or imino radicals substituted by hydrocarbon or substituted hydrocarbon radicals
  • C07D215/12 - with substituted hydrocarbon radicals attached to ring carbon atoms
  • C07D215/26 - Alcohols Ethers thereof
  • C07D309/12 - Only hydrogen atoms and one oxygen atom directly attached to ring carbon atoms
  • C07D487/08 - Bridged systems
  • C07F9/12 - with hydroxyaryl compounds
  • C07F9/3834 - Aromatic acids (P-C aromatic linkage)
  • C09B11/02 - derived from diarylmethanes

• US Classifications

  • 562 - Organic compounds
  • 462 - Books, strips, and leaves for manifolding
  • 544 - Organic compounds
  • 546 - Organic compounds
  • 987 - Organic compounds containing a bi, sb, as, or p atom or containing a metal atom of the 6th to 8th group of the periodic system