Patents by Inventor David E. Holt

David E. Holt 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).

  • Detergent compositions having improved percarbonate bleach stability
    Patent number: 5482642
    Abstract: Detergent compositions containing sodium percarbonate bleach are provided in which at least 60% of the originally added percarbonate remains after 28 days storage at 32.degree. C. and 80.degree. RH. The compositions contain at least one multi-ingredient component and have a density in excess of 650 g/liter, a content of Iron, Manganese and Copper less than 25 ppm, an Equilibrium Relative Humidity at 32.degree. C. of less than 30% and preferably a sodium sulfate content of less than 2.5% by weight.
    Type: Grant
    Filed: June 7, 1994
    Date of Patent: January 9, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Joseph T. H. Agar, David E. Holt
  • Method for making a multi-ply continuous filament ballistic helmet
    Patent number: 4199388
    Abstract: Method for making a laminated ballistic helmet from plural, continuous filament resin-coated layers. A continuous filament bundle, yarn or end is deposited on a plurality of different sized helmet-shaped preforms. A resin is coated upon or impregnated into the continuous filament bundle, yarn or end, either before or after deposition. The resulting resin containing preforms are stacked in nested relation and then molded to produce a bonded, laminated ballistic helmet.
    Type: Grant
    Filed: May 15, 1978
    Date of Patent: April 22, 1980
    Assignee: Geonautics, Inc.
    Inventors: Henry J. Tracy, David E. Holt, Janet E. Tracy