3821307

Information

• Patent Grant
• 3821307

• References
• Source

• Patent Number

  3,821,307

• Date Filed

  Not available

• Date Issued

  Friday, June 28, 1974
  50 years ago

• CPC

  • C07C49/477 - having two rings
  • C07C49/513 - a keto group being part of a condensed ring system
  • C07C49/517 - containing ether groups, groups, groups, or groups
  • C07C49/693 - polycyclic
  • C07C49/697 - containing six-membered aromatic rings
  • C07C49/753 - containing ether groups, groups, groups, or groups
  • C07D307/93 - condensed with a ring other than six-membered

• US Classifications

  • 568 - Organic compounds
  • 549 - Organic compounds