1340186

Information

• Patent Grant
• 1340186

• References
• Source

• Patent Number

  1,340,186

• Date Filed

  Not available

• Date Issued

  Tuesday, May 18, 1920
  104 years ago

• CPC

  • C11B7/0058 - in solvents or mixtures of solvents of different natures or compositions used in succession
  • C10G21/00 - Refining of hydrocarbon oils in the absence of hydrogen, by extraction with selective solvents

• US Classifications

  • 023 - Chemistry: physical processes
  • 554 - Organic compounds