1627939

Information

• Patent Grant
• 1627939

• References
• Source

• Patent Number

  1,627,939

• Date Filed

  Not available

• Date Issued

  Tuesday, May 10, 1927
  97 years ago

• CPC

  • C08K5/1535 - Five-membered rings
  • D06P1/225 - using acid vat method

• US Classifications

  • 524 - Synthetic resins or natural rubbers
  • 008 - Bleaching and dyeing
  • 528 - Synthetic resins or natural rubbers