Patents by Inventor Richard Dean Thomas

Richard Dean Thomas 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).

  • Microcide
    Patent number: 4008332
    Abstract: A microcidal liquid chemical combination for the controlled release of formaldehyde in intimate association with surfaces to be disinfected. The principal ingredients of the combination are 2-Hydroxymethyl-2-Nitro-1,3-Propanediol (hereinafter for convenience referred to as HNP), the active ingredient for releasing formaldehyde, formalin to prevent premature decomposition of the HNP, a pH adjusting agent to retain the HNP in its active state, and a hydroscopic material to keep the HNP moist for continued activity.
    Type: Grant
    Filed: December 23, 1969
    Date of Patent: February 15, 1977
    Inventor: Richard Dean Thomas