3438735

Information

• Patent Grant
• 3438735

• References
• Source

• Patent Number

  3,438,735

• Date Filed

  Not available

• Date Issued

  Tuesday, April 15, 1969
  55 years ago

• CPC

  • G01N33/2858 - metal particles
  • C10G17/07 - using halogen acids or oxyacids of halogen
  • C10G27/00 - Refining of hydrocarbon oils in the absence of hydrogen, by oxidation
  • C10M175/00 - Working-up used lubricants to recover useful products ; Cleaning
  • C10M175/0016 - with the use of chemical agents
  • C10M175/005 - using extraction processes; apparatus therefor
  • G01N31/22 - using chemical indicators

• US Classifications

  • 436 - Chemistry: analytical and immunological testing
  • 210 - Liquid purification or separation
  • 252 - Compositions