Patents by Inventor Fred J. Heinzelmann

Fred J. Heinzelmann 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).

  • Absorbent composition containing a severely hindered amino compound and an amine salt and process for the absorption of H.sub.2 S using the same
    Patent number: 4618481
    Abstract: An alkaline absorbent composition comprising a severely hindered amino compound and an amine salt is provided. A process for the removal of H.sub.2 S from fluid mixtures using this absorbent composition to produce a very low level of H.sub.2 S in the treated fluid is also provided. The process is also suited for the selective removal of H.sub.2 S from fluid mixtures comprising H.sub.2 S and CO.sub.2.
    Type: Grant
    Filed: August 30, 1985
    Date of Patent: October 21, 1986
    Assignee: Exxon Research and Engineering Co.
    Inventors: Fred J. Heinzelmann, Noah S. Rothblatt, James P. Glass, Jr., Geoffrey R. Say, George R. Chludzinski, Guido Sartori, W. S. Winston Ho
  • Removal of degradation product from gas treating solution
    Patent number: 4341746
    Abstract: A method for separating a cyclic urea degradation product from a solution, such as a scrubbing solution comprising n-cyclohexyl-1,3-propane diamine, an alkali metal carbonate and cyclic urea, is disclosed. The solution is passed to a vacuum crystallization zone wherein at least a portion of the cyclic urea is crystallized after which the solution is passed to a filtration zone for separation of the cyclic urea crystals from the solution.
    Type: Grant
    Filed: June 1, 1981
    Date of Patent: July 27, 1982
    Assignee: Exxon Research & Engineering Co.
    Inventors: Jan A. Sarsten, Fred J. Heinzelmann, Ferdinand C. Cataneo