Patents by Inventor Stephen J. Rehm

Stephen J. Rehm 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).

  • De-emulsifier
    Patent number: 4324734
    Abstract: A polyester is formed from a polyol of high molecular weight and a polybasic acid with a reactive acid catalyst to have an effective viscosity and acid number.
    Type: Grant
    Filed: October 27, 1980
    Date of Patent: April 13, 1982
    Assignee: Combustion Engineering, Inc.
    Inventors: Stephen J. Rehm, Young R. Lee
  • Process for the removal of hydrogen sulfide from gas mixtures
    Patent number: 4276271
    Abstract: An aqueous solution of a zinc salt is used to selectively remove hydrogen sulfide from a gas mixture. An insoluble basic zinc compound is added to the solution to regenerate, or replenish, the salt. A dispersant is added to both decrease the surface tension of the liquid and reduce the degree of hydration of the basic compound, thereby retarding significantly the agglomeration, settling and loss of the basic zinc compound.
    Type: Grant
    Filed: December 3, 1979
    Date of Patent: June 30, 1981
    Assignee: Combustion Engineering, Inc.
    Inventors: William P. Manning, Stephen J. Rehm, Jeffrey L. Schmuhl