Patents by Inventor Len J. Gawel

Len J. Gawel 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).

  • Sulfate reducing bacteria determination and control
    Patent number: 4999286
    Abstract: Sulfate reducing bacteria are detected by preparing a lysate so as to release an enzyme essential to derive energy by reduction of sulfate such as adenosine 5'-phosphosulfate reductase (APS reductase), containing the lysate with an antibody for the enzyme, and detecting the presence of the reaction product of the enzyme and the antibody. In one aspect, sulfate reducing bacteria are controlled responsive to such assay. In another aspect, a "test kit" is provided for carrying out the assay.
    Type: Grant
    Filed: December 23, 1986
    Date of Patent: March 12, 1991
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Len J. Gawel, Thomas Ng, James M. Odom, Richard C. Ebersole
  • Pyramidal offshore structure
    Patent number: 4645379
    Abstract: An underwater storage structure comprising an internally segmented tetrahedron and/or hexahedron, said self supporting structure having a fluid impermeable covering and an internally segmented skeleton. The structure can be subdivided internally by fluid impermeable coverings allowing ballast, such as water or sand slurry or the like, to be utilized to counter the bouyancy of internal voids formed by the subdivisions of the structure.
    Type: Grant
    Filed: October 3, 1983
    Date of Patent: February 24, 1987
    Assignee: Conoco Inc.
    Inventors: R. LeRoy Grimsley, Len J. Gawel
  • Pyramidal offshore structure
    Patent number: 4437794
    Abstract: Tethered or bottom-ballasted offshore platforms preferably have a pyramidal configuration. Struts connect the apexes of a polyhedron configuration to form a triangle defining each face. The pyramidal configuration can be ballasted to the bottom in relatively shallow water. A hexadron configuration can be tethered in deep water with tension members and flotation members.
    Type: Grant
    Filed: January 29, 1981
    Date of Patent: March 20, 1984
    Assignee: Conoco Inc.
    Inventors: R. Leroy Grimsley, Len J. Gawel
  • Bacterial production of lipase and pyocyanine from n-paraffins
    Patent number: 4019959
    Abstract: A method of producing lipase and pyocyanine from n-paraffins by growing a pseudomonas-like hydrocarbon oxidizing bacteria thereon and extracting the lipase and pyocyanine from the intracellular portion of the bacterium.
    Type: Grant
    Filed: October 6, 1975
    Date of Patent: April 26, 1977
    Assignee: Continental Oil Company
    Inventors: Len J. Gawel, Chi-Sin Chen