Patents by Inventor Yaodong Gan

Yaodong Gan 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).

  • Materials that provide bioresistance and/or defoaming and slower cooling properties for aqueous quenchants
    Patent number: 10526447
    Abstract: Methods and compositions are provided for heat treating, e.g. quenching a metal. The quenching composition includes a composition that comprises a polyamidopolyamine compound having a molecular weight of about 500 to about 100,000 and comprising a pendent amino group; and/or a non-polymeric amidoamine having a molecular weight of about 290 to about 5000 and comprising an amino group; and a hydroxyl containing diluent. These compositions impart one or more of the functions of quenching, lubricity, anti/low foaming and/or bioresistance to the quenching fluid.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: January 7, 2020
    Assignee: Houghton Technical Corp.
    Inventors: Joseph F. Warchol, Yaodong Gan, Valarie Yvonne Pearson
  • MATERIALS THAT PROVIDE BIORESISTANCE AND/OR DEFOAMING AND SLOWER COOLING PROPERTIES FOR AQUEOUS QUENCHANTS
    Publication number: 20160304979
    Abstract: Methods and compositions are provided for heat treating, e.g. quenching a metal. The quenching composition includes a composition that comprises a polyamidopolyamine compound having a molecular weight of about 500 to about 100,000 and comprising a pendent amino group; and/or a non-polymeric amidoamine having a molecular weight of about 290 to about 5000 and comprising an amino group; and a hydroxyl containing diluent. These compositions impart one or more of the functions of quenching, lubricity, anti/low foaming and/or bioresistance to the quenching fluid.
    Type: Application
    Filed: April 14, 2016
    Publication date: October 20, 2016
    Inventors: Joseph F. Warchol, Yaodong Gan, Valarie Yvonne Pearson
  • DOUBLE SIDED TAPE
    Publication number: 20120000504
    Abstract: A double sided tape without pin holes has a plurality of flexible support and pressure sensitive adhesive layers.
    Type: Application
    Filed: June 29, 2011
    Publication date: January 5, 2012
    Inventors: Bruce Bengtson, Brian E. Cohen, Yaodong Gan, John Paul Ishioye, Richard S. Malik, JR., Sumanth Varma Lokanath, Rui Xiao
  • Polyalkyldiallylamine-epihalohydrin resins as wet strength additives for papermaking and process for making the same
    Patent number: 6906133
    Abstract: The present invention relates to a process for making polyalkyldiallylamine-epihalohydrin resins, the resultant resins and their uses as wet strength additives for papermaking. These resins are obtained by a two step process, wherein the first step comprises the free radical polymerization or copolymerization of an alkyldiallylamine monomer in its protonated form; and the second step comprises reacting an ADAA polymer or copolymer with epihalohydrin under carefully controlled reaction conditions.
    Type: Grant
    Filed: January 3, 2003
    Date of Patent: June 14, 2005
    Assignee: Hercules Incorporated
    Inventors: Fang Deng, Daniel Yaodong Gan
  • Polyalkyldiallylamine-epihalohydrin resins as wet strength additives for papermaking and process for making the same
    Publication number: 20030166791
    Abstract: The present invention relates to a process for making polyalkyldiallylamine-epihalohydrin resins, the resultant resins and their uses as wet strength additives for papermaking. These resins are obtained by a two step process, wherein the first step comprises the free radical polymerization or copolymerization of an alkyldiallylamine monomer in its protonated form; and the second step comprises reacting an ADAA polymer or copolymer with epihalohydrin under carefully controlled reaction conditions.
    Type: Application
    Filed: January 3, 2003
    Publication date: September 4, 2003
    Inventors: Fang Deng, Daniel Yaodong Gan