Patents by Inventor Richard J. Menke

Richard J. Menke 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).

  • Environmentally safe solvent composition
    Patent number: 6200945
    Abstract: The present invention provides a solvent composition that is environmentally safe and has a palatable odor. The solvent composition can be used in numerous applications such as cleaning metal and non-metal surfaces and as a thinning agent. The solvent composition of the invention includes acetone, methyl propyl ketone, isopropyl alcohol, and n-butyl acetate; includes less than 3% methyl isobutyl ketone; and is substantially free of other undesirable chemicals such as methylene chloride, 1,1,1-trichloroethane, methyl ethyl ketone, and toluene. The present invention also includes a method of cleaning a metal or non-metal surface and thinning a composition using the solvent composition of the invention.
    Type: Grant
    Filed: May 20, 1999
    Date of Patent: March 13, 2001
    Assignee: McDonnell Douglas Corporation
    Inventors: Edward D. Lally, Richard J. Menke