Patents by Inventor Ronald W. White

Ronald W. White 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).

  • Antimicrobial quinolonyl lactam esters
    Patent number: 5434147
    Abstract: Antimicrobial quinolonyl lactam esters comprising a lactam-containing moiety linked, by an ester group, to the 3-carboxy group of a quinolone moiety. These compounds are of the formula: ##STR1## wherein (1) R.sup.3, R.sup.4, and R.sup.5, together with bonds "a" and "b", form certain lactam-containing moieties similar to those known in the art to have antimicrobial activity; and(2) A, R.sup.6, R.sup.7, and R.sup.8 form any of a variety of quinolone or napthyridine structures similar to those known in the art to have antimicrobial activity.
    Type: Grant
    Filed: October 8, 1993
    Date of Patent: July 18, 1995
    Assignee: Proctor & Gamble Pharmaceuticals, Inc.
    Inventors: Ronald W. White, Thomas P. Demuth, Jr.
  • Multi-color engraving system
    Patent number: 4706565
    Abstract: A multicolor engraving system includes a plurality of identical engraving presses mounted in line in a common frame. Each press is hydraulically operated and includes a high speed hydraulic motor for reciprocating its shuttle assembly. A work transfer mechanism moves each workpiece sequentially to the presses and accurately aligns it with the die in each press.
    Type: Grant
    Filed: May 27, 1986
    Date of Patent: November 17, 1987
    Inventors: John Martin, Ronald W. White, Johnnie L. White, Jr.