3437659

Information

• Patent Grant
• 3437659

• References
• Source

• Patent Number

  3,437,659

• Date Filed

  Not available

• Date Issued

  Tuesday, April 8, 1969
  55 years ago

• CPC

  • G03C1/12 - Methine and polymethine dyes
  • C07D213/68 - attached in position 4
  • C07D213/71 - to which a second hetero atom is attached
  • C07D215/18 - Halogen atoms or nitro radicals
  • C07D215/36 - Sulfur atoms
  • C07D277/76 - Sulfur atoms attached to a second hetero atom
  • C07D277/84 - Naphthothiazoles
  • C09B23/0033 - the substitutent being bound through an sulfur atom

• US Classifications

  • 548 - Organic compounds
  • 546 - Organic compounds