Patents by Inventor Roger B. Dehnel

Roger B. Dehnel 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).

  • Process for making absorbent articles
    Patent number: 4392908
    Abstract: The invention concerns a process for manufacturing a water-absorbent article in which particles of a water-swellable polymer are fixed to a water-absorbent substrate. The process includes the steps of forming on the surface of the water-swellable particles a coating of a thermoplastic adhesive resin; locating the coated particles in their unswollen and dry state on or within the water-absorbent substrate also in the dry state; and applying heat to soften the thermoplastic coating of the particles and pressing the particles and substrate to cause the particles to be bound to the substrate.
    Type: Grant
    Filed: January 9, 1981
    Date of Patent: July 12, 1983
    Assignee: Lever Brothers Company
    Inventor: Roger B. Dehnel