Patents by Inventor Frederick C. Leitert

Frederick C. Leitert 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).

  • Zero discharge process for manufacturing of phosphorous acid and hypophosphorous acid
    Patent number: 5368832
    Abstract: Disclosed is a method of making phosphorous acid or hypophosphorous acid by reacting hydrogen chloride with a sodium phosphite or a sodium hypophosphite, respectively, in the presence of water to precipitate sodium chloride crystals and form the acid. The acid is separated from the sodium chloride crystals and can be passed through an anion exchange column that is preferably loaded with phosphite or hypophosphite ions, respectively, to remove residual chloride ions.
    Type: Grant
    Filed: June 7, 1991
    Date of Patent: November 29, 1994
    Assignee: Occidental Chemical Corporation
    Inventors: Harry E. Buckholtz, Mohan S. Saran, Frederick C. Leitert, David A. Flautt
  • Balanced chlorination process
    Patent number: 4380682
    Abstract: The present invention relates to a novel process of halogenating aliphatic hydrocarbons which comprises, first non-selectively oxyhalogenating a C.sub.2 -C.sub.6 aliphatic hydrocarbon to a partially halogenated intermediate product having an overall avarage empirical formula in which the atomic ratio of halogen to carbon is greater than 1:1, then vapor phase halogenating said intermediate product to form an end product having an atomic ratio of carbon to hydrogen is at least 2:1; thereby selectively coproducing or consuming hydrogen chloride.
    Type: Grant
    Filed: February 22, 1982
    Date of Patent: April 19, 1983
    Assignee: Diamond Shamrock Corporation
    Inventors: Frederick C. Leitert, Carl G. Vinson, Jr.
  • High temperature chlorination catalyst
    Patent number: 4124534
    Abstract: The present invention relates to a novel catalyst system for chlorination of hydrocarbons either by oxyhydrochlorination, and/or oxychlorination. The catalyst system comprises copper chloride impregnated onto an alumina support with a metal chloride selected from the group consisting of potassium chloride, lithium chloride, cesium chloride, magnesium chloride, calcium chloride or barium chloride, said alumina support having a sodium oxide content of from 0.2 to about 2.0% by weight and a silica content no more than 4%.
    Type: Grant
    Filed: October 20, 1976
    Date of Patent: November 7, 1978
    Assignee: Diamond Shamrock Corporation
    Inventors: Frederick C. Leitert, Carl G. Vinson, Jr.
  • Catalyst and process for production of VCM
    Patent number: 4115323
    Abstract: The present invention relates to a novel catalyst for production of VCM containing a salt of rhodium or platinum, a salt of iron or copper, and a salt of zinc; impregnated on an alumina, titania, zirconia, silica, or silica alumina support.The catalyst can be employed in a fixed or fluid bed reactor to adiabatically produce vinyl chloride from a feed stream containing ethylene, a source of chlorine, a source of elemental oxygen, and, optionally, ethylene dichloride.
    Type: Grant
    Filed: October 19, 1977
    Date of Patent: September 19, 1978
    Assignee: Diamond Shamrock Corporation
    Inventors: Michael F. Lemanski, Frederick C. Leitert, Carl G. Vinson, Jr.