Patents by Inventor Ralph Dessau

Ralph Dessau 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).

  • Process for direct oxidation of propylene to propylene oxide and large particle size titanium silicalite catalysts for use therein
    Publication number: 20050187395
    Abstract: Large crystals of titanium silicalite or intergrowths of intergrown smaller crystals, having a mean particle size greater than 2 ?m, have been found catalytically effective at commercially reasonable rates for the epoxidation of olefins in the presence of hydrogen peroxide. Crystals synthesized with a silica source having a low sodium content exhibit high levels of production and selectivity. The crystals have a low attrition rate and are easily filterable from a product stream.
    Type: Application
    Filed: March 23, 2005
    Publication date: August 25, 2005
    Inventors: Bernard Cooker, Wilson Onimus, Jennifer Jewson, Ralph Dessau
  • Epoxidation catalyst
    Publication number: 20050187394
    Abstract: Noble metal-containing titanium zeolite catalysts are prepared by reacting a titanium compound, a silicon source, a templating agent, and a noble metal source at a temperature and for a time sufficient to form a molecular sieve. The catalyst is useful in olefin epoxidation with oxygen and hydrogen.
    Type: Application
    Filed: February 19, 2004
    Publication date: August 25, 2005
    Inventor: Ralph Dessau
  • Process for manufacture of gamma butyrolactones
    Patent number: 3992417
    Abstract: In the synthesis of gamma butyrolactones by reaction of an olefin with acetic acid in the presence of a reducible metal ion M of higher-valent form, such as manganic ion Mn.sup.+.sup.+.sup.+, the lactone product is recovered and coincidently therewith the metal ion M, in reduced form, is regenerated to its higher-valent form and recycled.
    Type: Grant
    Filed: August 15, 1974
    Date of Patent: November 16, 1976
    Assignee: Mobil Oil Corporation
    Inventors: Ralph Dessau, El-Ahmadi Heiba