3438994

Information

• Patent Grant
• 3438994

• References
• Source

• Patent Number

  3,438,994

• Date Filed

  Not available

• Date Issued

  Tuesday, April 15, 1969
  55 years ago

• CPC

  • G03G5/067 - containing hetero rings
  • C07F9/535 - Organo-phosphoranes
  • C07F9/5352 - Phosphoranes containing the structure P=C-
  • C07F9/54 - Quarternary phosphonium compounds
  • C07F9/5435 - Cycloaliphatic phosphonium compounds
  • C07F9/5475 - having nitrogen and selenium with or without oxygen or sulfur as ring hetero atoms; having nitrogen and tellurium with or without oxygen or sulfur as ring hetero atoms
  • C07F9/65324 - condensed with carbocyclic rings or carbocyclic ring systems
  • C07F9/6539 - Five-membered rings
  • C07F9/6541 - condensed with carbocyclic rings or carbocyclic ring systems
  • C07F9/65583 - each of the hetero rings containing nitrogen as ring hetero atom
  • C08K5/50 - Phosphorus bound to carbon only
  • C09B23/0008 - substituted on the polymethine chain
  • C09B23/005 - the substituent being a COOH and/or a functional derivative thereof
  • C09B23/0091 - having only one heterocyclic ring at one end of the methine chain
  • C09B23/10 - The polymethine chain containing an even number of >CH- groups
  • C09B23/168 - containing only phosphorus atoms
  • C09B57/00 - Other synthetic dyes of known constitution
  • G03C1/12 - Methine and polymethine dyes
  • G03C1/125 - Phosphocyanines
  • G03G5/062 - containing non-metal elements other than hydrogen, halogen, oxygen or nitrogen

• US Classifications

  • 548 - Organic compounds
  • 430 - Radiation imagery chemistry: process, composition, or product thereof
  • 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