2692222

Information

• Patent Grant
• 2692222

• References
• Source

• Patent Number

  2,692,222

• Date Filed

  Not available

• Date Issued

  Tuesday, October 19, 1954
  70 years ago

• CPC

  • C10G21/003 - Solvent de-asphalting
  • C09B33/12 - in which the coupling component is a hetero-cyclic compound
  • C10G21/00 - Refining of hydrocarbon oils in the absence of hydrogen, by extraction with selective solvents
  • C10G21/04 - by introducing simultaneously at least two immiscible solvents counter-current to each other
  • C10G73/06 - with the use of solvents

• US Classifications

  • 208 - Mineral oils: processes and products