3917777

Information

• Patent Grant
• 3917777

• References
• Source

• Patent Number

  3,917,777

• Date Filed

  Not available

• Date Issued

  Tuesday, November 4, 1975
  49 years ago

• CPC

  • B01D71/12 - Cellulose derivatives
  • B01D67/0011 - Casting solutions therefor
  • B01D71/16 - Cellulose acetate
  • B01D71/18 - Mixed esters
  • B01D71/22 - Cellulose ethers
  • B01D61/025 - Reverse osmosis; Hyperfiltration
  • B01D2323/06 - Specific viscosities of materials involved

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 210 - Liquid purification or separation