Patents by Inventor Charles B. Josephson

Charles B. Josephson 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 and compositions for acidizing and fracturing wells
    Patent number: 4476033
    Abstract: Gelled-acid compositions suitable for matrix-acidizing or fracture-acidizing of subterranean formations and methods of using the composition in these operations are provided wherein the compositions comprise water, water-dispersible acrylamide-derived polymer, an acid and an aldehyde precursor which hydrolyzes in aqueous acid media to produce aldehydes which in turn react with the polymer and gels the resulting mixture.
    Type: Grant
    Filed: July 30, 1982
    Date of Patent: October 9, 1984
    Assignee: Phillips Petroleum Company
    Inventor: Charles B. Josephson