2931803

Information

• Patent Grant
• 2931803

• References
• Source

• Patent Number

  2,931,803

• Date Filed

  Not available

• Date Issued

  Tuesday, April 5, 1960
  65 years ago

• CPC

  • C07D495/04 - Ortho-condensed systems
  • C07D329/00 - Heterocyclic compounds containing rings having oxygen and selenium or oxygen and tellurium atoms as the only ring hetero atoms
  • C07D333/28 - Halogen atoms
  • C07D339/08 - Six-membered rings
  • C07D345/00 - Heterocyclic compounds containing rings having selenium or tellurium atoms as the only ring hetero atoms
  • C07F9/52 - Halophosphines

• US Classifications

  • 540 - Organic compounds
  • 252 - Compositions
  • 524 - Synthetic resins or natural rubbers
  • 549 - Organic compounds
  • 562 - 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