2250976

Information

• Patent Grant
• 2250976

• References
• Source

• Patent Number

  2,250,976

• Date Filed

  Not available

• Date Issued

  Tuesday, July 29, 1941
  83 years ago

• CPC

  • C10G21/04 - by introducing simultaneously at least two immiscible solvents counter-current to each other
  • B01D11/043 - with stationary contacting elements, sieve plates or loose contacting elements
  • B01D11/0488 - Flow sheets
  • C07C37/007 - from the tar industry
  • C07C37/72 - by liquid-liquid treatment
  • C07C51/48 - by liquid-liquid treatment
  • C07C67/58 - by liquid-liquid treatment
  • C10G21/00 - Refining of hydrocarbon oils in the absence of hydrogen, by extraction with selective solvents

• US Classifications

  • 208 - Mineral oils: processes and products
  • 422 - Chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing