2845420

Information

• Patent Grant
• 2845420

• References
• Source

• Patent Number

  2,845,420

• Date Filed

  Not available

• Date Issued

  Tuesday, July 29, 1958
  66 years ago

• CPC

  • C09B67/0017 - Influencing the physical properties by treatment with an acid, H2SO4
  • C07F9/572 - Five-membered rings
  • C07F9/6561 - containing systems of two or more relevant hetero rings condensed among themselves or condensed with a common carbocyclic ring or ring system, with or without other non-condensed hetero rings
  • C09B19/02 - Bisoxazines prepared from aminoquinones
  • C09B69/007 - Dyestuffs containing phosphonic or phosphinic acid groups and derivatives
  • D06P1/227 - Specific dyes not provided for in groups D06P1/228 - D06P1/28

• US Classifications

  • 544 - Organic compounds
  • 008 - Bleaching and dyeing
  • 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