Patents by Inventor Gongwei Pu

Gongwei Pu 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).

  • Publication number: 20200172745
    Abstract: An aqueous dispersion having reduced VOCs and/or odor and an aqueous coating composition comprising the aqueous dispersion.
    Type: Application
    Filed: July 11, 2017
    Publication date: June 4, 2020
    Inventors: Daoshu Lin, Jianming Xu, Qingwei Zhang, James C. Bohling, Paul Doll, Jian Zou, Liu Yang, Gongwei Pu
  • Patent number: 10258903
    Abstract: A method for chromatographically separating a first saccharide from a liquid eluent comprising the first saccharide and a second saccharide by passing the liquid eluent through a bed including a polymeric macroporous alkylene-bridged resin in calcium form.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: April 16, 2019
    Inventors: Daryl J. Gisch, Christopher R. Eicher, Stephen Pease, Gongwei Pu
  • Publication number: 20180257003
    Abstract: A method for chromatographically separating a first saccharide from a liquid eluent comprising the first saccharide and a second saccharide by passing the liquid eluent through a bed including a polymeric macroporous alkylene-bridged resin in calcium form.
    Type: Application
    Filed: February 26, 2016
    Publication date: September 13, 2018
    Inventors: Daryl J. Gisch, Christopher R. Eicher, Stephen Pease, Gongwei Pu
  • Patent number: 9441280
    Abstract: A chromatographic method for separating a sugar from a sugar-containing liquid feed mixture by: contacting the liquid feed mixture with a stratum of cation exchange resin comprising a crosslinked copolymer matrix functionalized with sulfonic acid groups, and recovering a first product stream from the stratum that has a higher purity of the sugar than present in the liquid feed mixture. The method is characterized by the stratum of cation exchange resin including: i) at least 80 wt % of cation exchange resin including alkaline earth counter ions, and ii) at least 5 wt % of cation exchange resin including alkali earth counter ions.
    Type: Grant
    Filed: August 15, 2014
    Date of Patent: September 13, 2016
    Inventors: Stephen Pease, Gongwei Pu
  • Publication number: 20160194727
    Abstract: A chromatographic method for separating a sugar from a sugar-containing liquid feed mixture by: contacting the liquid feed mixture with a stratum of cation exchange resin comprising a crosslinked copolymer matrix functionalized with sulfonic acid groups, and recovering a first product stream from the stratum that has a higher purity of the sugar than present in the liquid feed mixture. The method is characterized by the stratum of cation exchange resin including: i) at least 80 wt % of cation exchange resin including alkaline earth counter ions, and ii) at least 5 wt % of cation exchange resin including alkali earth counter ions.
    Type: Application
    Filed: August 15, 2014
    Publication date: July 7, 2016
    Inventors: Stephen Pease, Gongwei Pu
  • Publication number: 20160090641
    Abstract: Provided is a process for removing impurities from a solution (S1), wherein said solution (S1) comprises one or more sugar dissolved in an aqueous solvent, wherein said solution (S1) has conductivity at 25° C. of 500 ?S/cm or higher, and wherein said process comprises (a) contacting said solution (S1) with a cation exchange resin (R1) to produce a solution (S2) in which 80% or more of the cations are all of the same element (E); and (b) then contacting said solution (S2) with a cation exchange resin (R2) in which, prior to said contacting, 90% or more of acid groups are in the salt form with said element (E). Also provided is a process for producing glycols comprising providing an extract solution by the process of claim 1, and then contacting said solution (S3) with hydrogen and a metal catalyst.
    Type: Application
    Filed: May 28, 2013
    Publication date: March 31, 2016
    Applicant: Dow Chemical (China) Inverstment Company Limited
    Inventors: Yi Shu, Fengshan Luo, Gongwei Pu
  • Patent number: 9297050
    Abstract: Provided is a process for removing impurities from a solution (S1), wherein said solution (S1) comprises one or more sugar dissolved in an aqueous solvent, wherein said solution (S1) has conductivity at 25° C. of 500 ?S/cm or higher, and wherein said process comprises (a) contacting said solution (S1) with a cation exchange resin (R1) to produce a solution (S2) in which 80% or more of the cations are all of the same element (E); and (b) then contacting said solution (S2) with a cation exchange resin (R2) in which, prior to said contacting, 90% or more of acid groups are in the salt form with said element (E). Also provided is a process for producing glycols comprising providing an extract solution by the process of claim 1, and then contacting said solution (S3) with hydrogen and a metal catalyst.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: March 29, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Yi Shu, Fengshan Luo, Gongwei Pu