Patents by Inventor Gary M. Andrews

Gary M. Andrews 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).

  • Corrosion preventive composition
    Patent number: 4927550
    Abstract: The present invention is, in one form, an aqueous alkaline metalworking fluid composition in the form of a concentrate which includes a salt of orthophosphoric acid; a dibasicdioic acid in an amount of up to about 5.0% by weight of the concentrate; an essentially phosphonate-free chelating agent; and, a neutralizing base. The composition may also include a lubricating agent, a coupling agent, a passavating agent, a biocide, and a colorant.
    Type: Grant
    Filed: January 27, 1989
    Date of Patent: May 22, 1990
    Assignee: Castrol Industrial Inc.
    Inventors: John A. Cutcher, Gary M. Andrews