Patents by Inventor Leroy N. Hitchcock

Leroy N. Hitchcock 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).

  • Metal working fluid composition and method of detecting fluid deterioration
    Patent number: 9778242
    Abstract: A wear-indicating metalworking fluid is provided that includes a lubricant base; and a wear-indicating agent. A method of determining wear in a metalworking fluid includes providing wear-indicating metalworking fluid that contains a lubricant base and a wear indicating agent; and observing the visual appearance of the metalworking fluid. A change in visual appearance of the metalworking fluid when compared to an unused metalworking fluid indicates wear of the metalworking fluid.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: October 3, 2017
    Assignee: ILLINOIS TOOL WORKS INC.
    Inventors: Emily J. Gibbons, Steven M. Badger, II, Leroy N. Hitchcock, Jacob F. Harkey
  • METAL WORKING FLUID COMPOSITION AND METHOD OF DETECTING FLUID DETERIORATION
    Publication number: 20150064741
    Abstract: A wear-indicating metalworking fluid is provided that includes a lubricant base; and a wear-indicating agent. A method of determining wear in a metalworking fluid includes providing wear-indicating metalworking fluid that contains a lubricant base and a wear indicating agent; and observing the visual appearance of the metalworking fluid. A change in visual appearance of the metalworking fluid when compared to an unused metalworking fluid indicates wear of the metalworking fluid.
    Type: Application
    Filed: August 22, 2014
    Publication date: March 5, 2015
    Inventors: Emily J. Gibbons, Steven M. Badger, II, Leroy N. Hitchcock, Jacob F. Harkey