Patents by Inventor John Collins Dyer

John Collins Dyer 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).

  • Absorbent foam materials for aqueous fluids made from high internal phase emulsions having very high water-to-oil ratios
    Patent number: 5650222
    Abstract: Low density collapsed absorbent foams materials that, upon contact with aqueous fluids, in particular urine, can expand and absorb these fluids. These low density foams typically have an expanded thickness from about 6 to about 10 times the thickness of the foams in their collapsed state. These low density foams are made by polymerizing high internal phase emulsions (HIPEs) where the volume to weight ratio of the water phase to the oil phase is in the range of from about 55:1 to about 100:1.
    Type: Grant
    Filed: November 29, 1995
    Date of Patent: July 22, 1997
    Assignee: The Procter & Gamble Company
    Inventors: Thomas Allen DesMarais, Keith Joseph Stone, John Collins Dyer, Bryn Hird, Stephen Allen Goldman, Paul Seiden