2638438

Information

• Patent Grant
• 2638438

• References
• Source

• Patent Number

  2,638,438

• Date Filed

  Not available

• Date Issued

  Tuesday, May 12, 1953
  71 years ago

• CPC

  • C10G67/10 - including alkaline treatment as the refining step in the absence of hydrogen

• US Classifications

  • 208 - Mineral oils: processes and products
  • 585 - Chemistry of hydrocarbon compounds