Patents by Inventor Edward Louis White

Edward Louis White 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).

  • Basic zinc phosphites
    Patent number: 3969293
    Abstract: Novel basic zinc phosphites are described for use as tannin stain inhibitors which can be represented by the formula;X ZnO.sup.. ZnHPO.sub.3wherein X is a number from 1/2 to 10.The basic zinc phosphites are prepared by admixing zinc oxide and phosphorous acid in the presence of water.
    Type: Grant
    Filed: March 24, 1975
    Date of Patent: July 13, 1976
    Assignee: NL Industries, Inc.
    Inventors: Edward Louis White, William Ernest Robertson, William Heng-Sen Yu