Patents by Inventor Cornelis W. A. Schram

Cornelis W. A. Schram 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 the preparation of an aqueous solution of a heteropolysaccharide
    Patent number: 4816077
    Abstract: An aqueous solution of a heteropolysaccharide comprising glucose, galactose, pyruvic and succinic acid, is prepared by mixing a concentrate of said heteropolysaccharide with a saline aqueous medium containing from 12 to 30% w of at least one salt, and by shearing the mixture obtained.
    Type: Grant
    Filed: January 11, 1988
    Date of Patent: March 28, 1989
    Assignee: Shell Oil Company
    Inventors: George van Os, Jan J. Bleeker, Cornelis W. A. Schram
  • Process for the preparation of an aqueous solution of a heteropolysaccharide
    Patent number: 4738727
    Abstract: An aqueous solution of a heteropolysaccharide comprising glucose, galactose, pyruvic and succinic acid, is prepared by mixing a concentrate of said heteropolysaccharide with a saline aqueous medium containing from 12 to 30% w of at least one salt, and by shearing the mixture obtained.
    Type: Grant
    Filed: June 3, 1986
    Date of Patent: April 19, 1988
    Assignee: Shell Oil Company
    Inventors: George van Os, Jan J. Bleeker, Cornelis W. A. Schram
  • Hydrogenolysis of phenyl alkyl ketones and 1-phenylalkanols
    Patent number: 3944627
    Abstract: A process is disclosed for the production of alkylbenzenes by contacting phenyl alkyl ketones and/or 1-phenylalkanols with hydrogen in the presence of a supported noble metal of Group VIII at a temperature above about 175.degree.C.
    Type: Grant
    Filed: May 23, 1974
    Date of Patent: March 16, 1976
    Assignee: Shell Oil Company
    Inventors: Cornelis W. A. Schram, Freddy Wattimena