Patents by Inventor Qingpu Hou

Qingpu Hou 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).

  • Methods for producing biocompatible materials
    Patent number: 8980956
    Abstract: A method for producing polymerizable solution which comprises dissolving an ethylenically unsaturated zwitterionic monomer in a co-monomer system comprising a functionalized ethylenically unsaturated monomer in which the zwitterionic monomer is soluble, a siloxane group-containing monomer or macromer, and a crosslinking agent is disclosed. The polymerizable solution is biocompatible and can be used to produce polymers and articles such as contact lenses.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: March 17, 2015
    Assignee: Vertellus Specialities Inc.
    Inventors: Michael Driver, Qingpu Hou, Jin Hai Wang
  • METHODS FOR PRODUCING BIOCOMPATIBLE MATERIALS
    Publication number: 20130059926
    Abstract: A method for producing polymerisable solution which comprises dissolving an ethylenically unsaturated zwitterionic monomer in a co-monomer system comprising a functionalised ethylenically unsaturated monomer in which the zwitterionic monomer is soluble, a siloxane group-containing monomer or macromer, and a crosslinking agent is disclosed. The polymerisable solution is biocompatible and can be used to produce polymers and articles such as contact lenses.
    Type: Application
    Filed: August 31, 2012
    Publication date: March 7, 2013
    Inventors: Michael Driver, Qingpu Hou, Jin Hai Wang
  • BIOCOMPATIBLE POLYMER NETWORKS
    Publication number: 20120322953
    Abstract: Functionalized prepolymers and biocompatible polymer networks are disclosed, especially biodegradable polymer networks obtainable by polymerization of the functionalized prepolymers by the example ultraviolet (UV), redox, and/or heat radical polymerization. Functionalized prepolymers (macromers) are obtainable by reaction of a prepolymer comprising at least one alcohol, amine, and/or sulfhydril group, with an unsaturated mono-esterified dicarbonic acid, especially fumanic acid mono-ethyl ester.
    Type: Application
    Filed: March 13, 2012
    Publication date: December 20, 2012
    Applicant: DSM IP ASSETS B.V.
    Inventors: Dirk Wybe GRIJPMA, Qingpu Hou, Jan Feijen
  • Biocompatible Polymer Networks
    Publication number: 20080267901
    Abstract: Functionalized prepolymers and biocompatible polymer networks are disclosed, especially biodegradable polymer networks obtainable by polymerization of the functionalized prepolymers by for example ultraviolet (UV), redox, and/or heat radical polymerization. Functionalized prepolymers (macromers) are obtainable by reaction of a prepolymer comprising at least one alcohol, amine, and/or sulfhydril group, with an unsaturated mono-esterified dicarbonic acid, especially fumaric acid mono-ethyl ester.
    Type: Application
    Filed: October 15, 2003
    Publication date: October 30, 2008
    Inventors: Dirk Wybe Grijpma, Qingpu Hou, Jan Feijen
  • Method for preparing a porous polymer structure
    Publication number: 20050147686
    Abstract: A polymer is dissolved in a first liquid or the polymer is brought into the liquid phase. To the solution are added particles which are insoluble in the first liquid, so that a suspension or dispersion results. The suspension or dispersion is then transferred into an excess of second liquid, in which both the polymer and the particles are insoluble. The second liquid is mixed vigorously and this results in a precipitate of the polymer with the particles encapsulated therein.
    Type: Application
    Filed: January 23, 2003
    Publication date: July 7, 2005
    Inventors: Dirk Grijpma, Qingpu Hou, Jan Feijen