2789140

Information

• Patent Grant
• 2789140

• References
• Source

• Patent Number

  2,789,140

• Date Filed

  Not available

• Date Issued

  Tuesday, April 16, 1957
  67 years ago

• CPC

  • C07C45/47 - using phosgene
  • C07C49/83 - polycyclic
  • C07C49/84 - containing ether groups, groups, groups, or groups

• US Classifications

  • 568 - Organic compounds