Patents by Inventor Harold R. Attfield

Harold R. Attfield 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).

  • Rebond foam and process for production thereof
    Patent number: 5817703
    Abstract: A rebond foam comprising a plurality of isocyanate-based polymeric foam pieces bonded to one another with an isocyanate-based binder is disclosed. A superabsorbent material is comprised in one or both of the isocyanate-based polymeric foam pieces and the isocyanate-based binder. The rebond foam is capable of: (i) absorbing at least about 5 times its weight of a 0.9 wt./wt. % aqueous NaCl solution maintained at a temperature of from about 20.degree. to about 25.degree. C., and (ii) retaining at least about 5 times its weight of absorbed aqueous NaCl solution which is bound to the superabsorbent material. A process for producing a rebond foam is also disclosed.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: October 6, 1998
    Assignee: Woodbridge Foam Corporation
    Inventors: G. Ronald Blair, Harold R. Attfield, Robert N. Wilson