Patents by Inventor Gary Richard Asbrand

Gary Richard Asbrand 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).

  • Deinking composition and process
    Patent number: 5817212
    Abstract: This invention relates to the deinking process for office wastepaper for utilization in a neutral medium. Particularly the invention relates to a deinking process for office wastepaper comprising the steps of: (a) converting wastepaper to pulp; (b) contacting the pulp with a deinking agent comprising of: i) an enzyme active at a pH of from about 4 to about 9 and ii) a nonionic surfactant selected from the group consisting of higher aliphatic alcohol alkoxylates, aliphatic acid alkoxylates, higher aromatic alcohol alkoxylates, fatty acid amides of alkanolamines, fatty acid amide alkoxylates, propylene glycol alkoxylates, block or random copolymers of ethylene and propylene oxide, higher alcohol polyethylene polypropylene block or random adducts and mixtures thereof; in an aqueous medium having a pH of from about 4 to about 9; and (c) removing ink from the pulp by flotation, water washing or a combination of flotation and water washing.
    Type: Grant
    Filed: February 10, 1997
    Date of Patent: October 6, 1998
    Assignee: Rhodia Inc.
    Inventors: Jill Marie Jobbins, Gary Richard Asbrand, Jr.
  • Enzymatic deinking process for office wastepaper with selected noninic surfactants
    Patent number: 5807464
    Abstract: This invention relates to the deinking process for office wastepaper for utilization in a neutral medium. Particularly the invention relates to a deinking process for office wastepaper comprising the steps of: (a) converting wastepaper to pulp; (b) contacting the pulp with a deinking agent comprising of: i) an enzyme active at a pH of from about 4 to about 9 and ii) a nonionic surfactant selected from the group consisting of higher aliphatic alcohol alkoxylates, aliphatic acid alkoxylates, higher aromatic alcohol alkoxylates, fatty acid amides of alkanolamines, fatty acid amide alkoxylates, propylene glycol alkoxylates, block or random copolymers of ethylene and propylene oxide, higher alcohol polyethylene polypropylene block or random adducts and mixtures thereof; in an aqueous medium having a pH of from about 4 to about 9; and (c) removing ink from the pulp by flotation, water washing or a combination of flotation and water washing.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: September 15, 1998
    Assignee: Rhodia Inc.
    Inventors: Jill Marie Jobbins, Gary Richard Asbrand