Patents by Inventor Bryan Beyer

Bryan Beyer 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).

  • Stable purified aqueous solutions of fluorescent whitening agent
    Patent number: 4468341
    Abstract: A process for the preparation of a stable aqueous solution of the tetrasodium salt of 4,4'-bis(4-p-sulfo-anilino-6-diisopropanolamino-s-triazin-2-ylamino)-2,2'- stilbenedisulfonic acid is disclosed. The resultant solution is substantially free from destabilizing organic impurities and destabilizing inorganic salts. In the absence of these destabilizing materials the solution does not require the co-solvents of the prior art.
    Type: Grant
    Filed: October 27, 1983
    Date of Patent: August 28, 1984
    Assignee: Ciba-Geigy Corporation
    Inventor: Bryan Beyer