3852261

Information

• Patent Grant
• 3852261

• References
• Source

• Patent Number

  3,852,261

• Date Filed

  Not available

• Date Issued

  Tuesday, December 3, 1974
  50 years ago

• CPC

  • C09B44/105 - derived from pyridine, pyridone
  • C09B29/3621 - from a pyridine ring
  • C09B29/3626 - from a pyridine ring containing one or more hydroxyl groups (or = O)
  • C09B44/08 - from coupling components containing heterocyclic rings

• US Classifications

  • 534 - Organic compounds
  • 008 - Bleaching and dyeing