3647921

Information

• Patent Grant
• 3647921

• References
• Source

• Patent Number

  3,647,921

• Date Filed

  Not available

• Date Issued

  Tuesday, March 7, 1972
  52 years ago

• CPC

  • C08G63/191 - Hydroquinones
  • C08F283/02 - on to polycarbonates or saturated polyesters
  • C08L67/03 - the dicarboxylic acids and dihydroxy compounds having the carboxyl- and the hydroxy groups directly linked to aromatic rings

• US Classifications

  • 525 - Synthetic resins or natural rubbers
  • 524 - Synthetic resins or natural rubbers