Patents by Inventor Jan W. Drozd

Jan W. Drozd 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).

  • Method for improving the filterability of a microbial broth
    Patent number: 4729958
    Abstract: Method of improving the filterability of a microbial broth containing microbial cell matter resulting from the breaking down of cells, which comprises contacting that broth with one or more enzymes having nuclease activity; use of the method for improving the flow of a microbial polysaccharide containing fluid displacement solution which is applied in enhanced oil recovery.
    Type: Grant
    Filed: December 12, 1985
    Date of Patent: March 8, 1988
    Assignee: Shell Oil Company
    Inventors: Jan W. Drozd, Andrew J. Rye
  • Microbiological production of alkylene oxides
    Patent number: 4560657
    Abstract: A process for the production of an alkylene oxide containing at least 3 carbon atoms which comprises cultivating an ethylene-utilizing microorganism under aerobic conditions in a liquid nutrient medium containing the corresponding alkene together with assimilable sources of nitrogen and essential mineral salts, the cultivation being carried out in the presence of ethylene in a molar proportion to alkene below 1:40.
    Type: Grant
    Filed: July 20, 1983
    Date of Patent: December 24, 1985
    Assignee: Shell Oil Company
    Inventors: Jan W. Drozd, Maureen L. Bailey