Patents by Inventor John A. Cutcher

John A. Cutcher 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
  • Method and apparatus for measuring the penetration of fluids
    Patent number: 4596137
    Abstract: A method and apparatus for measuring the penetration of fluids which includes a sandwich formed of a substantially flat plate means adapted to have a portion thereof immersed in a fluid and a cover plate in surface contact therewith and clamp means to secure the cover plate in surface contact with the flat plate. When the sandwich is immersed in a fluid to be measured, the fluid is drawn upwardly in the interstices between the flat plate and the cover plate at a rate which is a measure of the penetration of the fluid.
    Type: Grant
    Filed: March 11, 1985
    Date of Patent: June 24, 1986
    Assignee: Viscosity Oil Co.
    Inventors: C. Donald Fisher, John A. Cutcher