2133340

Information

• Patent Grant
• 2133340

• References
• Source

• Patent Number

  2,133,340

• Date Filed

  Not available

• Date Issued

  Tuesday, October 18, 1938
  86 years ago

• CPC

  • C09B47/22 - Obtaining compounds having nitrogen atoms directly bound to the phthalocyanine skeleton
  • C09B47/0676 - having nitrogen atom(s) linked directly to the skeleton

• US Classifications

  • 540 - Organic compounds