Patents by Inventor Lloyd B. Keenportz

Lloyd B. Keenportz 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).

  • Soil additive
    Patent number: 5698001
    Abstract: A soil additive including lignonsulfonate, humic acid, an inert filler, such as bentonite clay, and a metal salt selected from anhydrous borax, magnesium sulfate, copper sulfate, iron sulfate, manganese sulfate, zinc sulfate, ammonium sulfate and gypsum. The composition may also include a predetermined concentration of a surfactant to increase the breakdown of the composition in water.
    Type: Grant
    Filed: October 24, 1995
    Date of Patent: December 16, 1997
    Assignee: RSA Microtech, Incorporated
    Inventor: Lloyd B. Keenportz