Patents by Inventor Chun Fei Chueh

Chun Fei Chueh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Recovery of alkylene glycols
    Patent number: 4057471
    Abstract: Ethylene glycol or 1,2-propylene glycol contained in mixtures with lower carboxylate esters of the glycol is recovered by azeotropic distillation of the mixtures with an azeotroping agent forming a minimum boiling azeotrope with the ethylene glycol or the 1,2-propylene glycol, the distillation being effected with reflux of azeotroping agent as well as controlled reflux of the glycol to the distillation zone.
    Type: Grant
    Filed: September 12, 1975
    Date of Patent: November 8, 1977
    Assignee: Halcon International, Inc.
    Inventor: Chun Fei Chueh
  • Adaptor
    Patent number: D543259
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: May 22, 2007
    Assignee: Kowabunga Patent & Trademark 1, LLC
    Inventors: Chun Fei Chueh, Paul A. Scharf