3457256

Information

• Patent Grant
• 3457256

• References
• Source

• Patent Number

  3,457,256

• Date Filed

  Not available

• Date Issued

  Tuesday, July 22, 1969
  55 years ago

• CPC

  • B01D67/0093 - Chemical modification
  • B01D71/12 - Cellulose derivatives
  • C08J5/2212 - Natural macromolecular compounds
  • C08J5/2287 - After-treatment
  • C08J2301/00 - Characterised by the use of cellulose, modified cellulose or cellulose derivatives
  • C08J2379/06 - Polyhydrazides Polytriazoles Polyamino-triazoles Polyoxadiazoles

• US Classifications

  • 536 - Organic compounds
  • 210 - Liquid purification or separation