Patents by Inventor Lucy J. Zientek

Lucy J. Zientek 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).

  • Denture fixative composition with partially neutralized and crosslinked polyacrylic acid
    Patent number: 4542168
    Abstract: A denture fixative composition contains as the active fixative a partially neutralized and crosslinked polyacrylic acid or a precursor combination of the polyacrylic acid, neutralizing agent(s) and crosslinking agent(s) which is adapted to form the active fixative, and at least one hydrophilic polymer, preferably, sodium carboxymethyl cellulose, hydroxypropyl guar or sodium alginate.
    Type: Grant
    Filed: February 6, 1984
    Date of Patent: September 17, 1985
    Assignee: Block Drug Co., Inc.
    Inventors: Tiang-Shing Chang, Lucy J. Zientek, Arthur Viningauz
  • Denture fixative composition containing partially neutralized copolymers of maleic acid or anhydride and alkyl vinyl ethers which are optionally partially crosslinked
    Patent number: 4521551
    Abstract: Denture fixative compositions contain denture fixative excipients and as the denture fixative, a water soluble partially neutralized alkyl vinyl ether-maleic acid or anhydride copolymer, optionally partly crosslinked, and at least one hydrophilic polymer, preferably sodium carboxymethylcellulose, polyethylene oxide or hydroxypropyl guar.
    Type: Grant
    Filed: December 2, 1983
    Date of Patent: June 4, 1985
    Assignee: Block Drug Company, Inc.
    Inventors: Tiang-Shing Chang, Lucy J. Zientek
  • Method of adhering dentures
    Patent number: 4470814
    Abstract: A method for adhering dentures to oral mucosa with a denture fixative composition containing as the active fixative a partially neutralized and crosslinked polyacrylic acid or a precursor combination of the polyacrylic acid, neutralizing agent(s) and crosslinking agent(s) which is adapted to form the active fixative, and at least one hydrophilic polymer, preferably, sodium carboxymethyl cellulose, hydroxypropyl guar or sodium alginate.
    Type: Grant
    Filed: September 2, 1983
    Date of Patent: September 11, 1984
    Assignee: Block Drug Company, Inc.
    Inventors: Tiang-Shing Chang, Lucy J. Zientek, Arthur Viningauz
  • Denture fixative composition
    Patent number: 4373036
    Abstract: A denture fixative composition contains a dentally acceptable excipient and an effective fixative amount of a fixative mixture comprising hydroxypropyl cellulose and at least one partially neutralized alkyl vinyl ether-maleic acid or anhydride copolymer, optionally partly crosslinked, or a partially neutralized, optionally partly crosslinked polyacrylic acid or a precursor combination of the copolymer or polyacrylic acid, neutralizing agents, and optionally crosslinking agents, which is adapted to form the fixative in situ, or polyethylene oxide.
    Type: Grant
    Filed: December 21, 1981
    Date of Patent: February 8, 1983
    Assignee: Block Drug Company, Inc.
    Inventors: Tiang-Shing Chang, Lucy J. Zientek, Arthur Viningauz, Marcy L. Scheps
  • Cosmetic and pharmaceutical vehicle thickened with solid emulsifier
    Patent number: 4310516
    Abstract: An anhydrous pseudoplastic and thixotropic oleaginous vehicle is prepared by mixing at least one solid emulsifying agent having an HLB number of 12 or less with an oleaginous material and then cooling the mixture over a temperature range of at least about 15.degree. C., said range encompassing the pour point of said agent.
    Type: Grant
    Filed: February 1, 1980
    Date of Patent: January 12, 1982
    Assignee: Block Drug Company Inc.
    Inventors: Tiang-Shing Chang, Lucy J. Zientek