Patents by Inventor Thomas Gerald Hyde

Thomas Gerald Hyde 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).

  • Treatment of optical brightening agents
    Patent number: 3962115
    Abstract: A thixotropic slurry is prepared comprising a compound having the formula ##SPC1##Wherein X and Y may be the same or different and each represents a mono- or di-substituted amino or alkoxy group and M represents an alkali metal or hydrogen, by mixing the wet filter cake obtained during the preparation of this compound with a dispersing agent such that the resulting slurry has a Brookfield viscosity from 200 to 10,000 centipoises at 6 r.p.m. A detergent composition is prepared by adding the above obtained slurry to a detergent and mixing.
    Type: Grant
    Filed: October 30, 1973
    Date of Patent: June 8, 1976
    Assignee: Ciba-Geigy AG
    Inventors: David Ronald Clark, Thomas Gerald Hyde, Robert Erik Brauchbar