Patents by Inventor Allen Heyd

Allen Heyd 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).

  • Non-adhesive gel compositions for stabilizing dentures
    Patent number: 4315779
    Abstract: A substantially non-adhesive gel composition for use in improving the fit and adaptation of dentures to the oral cavity of the user, which comprises about 1 to 10% by weight of a hydrophilic cellulose polymer or alginate, about 5 to about 40% by weight of a demulcent, preferably glycerine, and about 50 to about 95% water. The composition reduces denture movement and prevents buildup of undesireable deposit such as plaque or the like.
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: February 16, 1982
    Assignee: Richardson-Vicks Inc.
    Inventors: Allen Heyd, Nutan B. Shah
  • Denture adhesive of sodium carboxymethylcellulose, poly(ethylene oxide) homopolymer and mineral oil
    Patent number: 4280936
    Abstract: An improved denture adhesive contains a particular amount of a specified ratio of sodium carboxymethylcellulose and poly(ethylene oxide) in a mineral oil base.
    Type: Grant
    Filed: April 17, 1980
    Date of Patent: July 28, 1981
    Assignee: Richardson-Merrell Inc.
    Inventors: Dadi J. Dhabhar, Allen Heyd, Nicholas F. Schmidt
  • Mouthwash compositions
    Patent number: 4130638
    Abstract: Physiologically acceptable mouthwash formulations containing sodium ricinoleate substantially free of haze and precipitation.
    Type: Grant
    Filed: November 21, 1977
    Date of Patent: December 19, 1978
    Assignee: Richardson-Merrell Inc.
    Inventors: Dadi J. Dhabhar, Allen Heyd, Eugene H. Gans