3575981

Information

• Patent Grant
• 3575981

• References
• Source

• Patent Number

  3,575,981

• Date Filed

  Not available

• Date Issued

  Tuesday, April 20, 1971
  53 years ago

• CPC

  • C09B5/2436 - only nitrogen-containing hetero rings

• US Classifications

  • 546 - Organic compounds
  • 552 - Organic compounds