Patents by Inventor Andrew I. Brewer

Andrew I. Brewer 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).

  • Animal litter process
    Patent number: 4206718
    Abstract: A process of preparing litter for absorbing and neutralizing the odors of animal waste matter from a mixture of alfalfa and gelatinizable carbohydrate such as a flour.
    Type: Grant
    Filed: February 5, 1975
    Date of Patent: June 10, 1980
    Assignee: Star-Kist Foods, Inc.
    Inventor: Andrew I. Brewer