Patents by Inventor Jiangping Yu

Jiangping Yu 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).

  • Transaminase mutant and use thereof
    Patent number: 11952575
    Abstract: A transaminase mutant and use hereof, the amino acid sequence of the transaminase mutant is an amino acid sequence in which the amino acid sequence as represented by SEQ ID NO: 1 is mutated, the mutated amino acid position being one or more selected from among F89, K193, P243, V234, I262, Q280, V379, R416, A417 and C418. The enzymatic activity and/or stability of the transaminase mutant is improved.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: April 9, 2024
    Assignee: ASYMCHEM LIFE SCIENCE (TIANJIN) CO., LTD
    Inventors: Hao Hong, Gage James, Jiangping Lu, Xingfu Xu, Wenyan Yu, Xin Huang, Yulei Ma, Yibing Cheng
  • Method of making graft copolymers from sodium poly(aspartate) and the resulting graft copolymer
    Patent number: 8202946
    Abstract: A variety of graft copolymers can be formed sodium poly(aspartate) with a wide variety of monomers in an aqueous medium by the use of grafting method in the presence of radical initiator at a temperature of from about five degrees Centigrade to about 100 degrees Centigrade. Graft copolymers at high conversion with molecular weight up to millions can be prepared using this method.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: June 19, 2012
    Assignee: NanoChem Solutions, Inc.
    Inventors: Damodar R. Patil, Laiduien G. Fan, Joseph C. Fan, Jiangping Yu
  • Method of making graft copolymers from sodium poly(aspartate) and the resulting graft copolymer
    Publication number: 20110213099
    Abstract: A variety of graft copolymers can be formed sodium poly(aspartate) with a wide variety of monomers in an aqueous medium by the use of grafting method in the presence of radical initiator at a temperature of from about five degrees Centigrade to about 100 degrees Centigrade. Graft copolymers at high conversion with molecular weight up to millions can be prepared using this method.
    Type: Application
    Filed: May 2, 2011
    Publication date: September 1, 2011
    Inventors: Damodar R. Patil, Laiduien G. Fan, Joseph C. Fan, Jiangping Yu
  • Method of making graft copolymers from sodium poly(aspartate) and the resulting graft copolymer
    Patent number: 7999040
    Abstract: A variety of graft copolymers can be formed sodium poly(aspartate) with a wide variety of monomers in an aqueous medium by the use of grafting method in the presence of radical initiator at a temperature of from about five degrees Centigrade to about 100 degrees Centigrade. Graft copolymers at high conversion with molecular weight up to millions can be prepared using this method.
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: August 16, 2011
    Assignee: Nanochem Solutions, Inc.
    Inventors: Damodar R. Patil, Laiduien G. Fan, Joseph C. Fan, Jiangping Yu
  • METHOD OF MAKING GRAFT COPOLYMERS FROM SODIUM POLY(ASPARTATE) AND THE RESULTING GRAFT COPOLYMER
    Publication number: 20090326165
    Abstract: A variety of graft copolymers can be formed sodium poly(aspartate) with a wide variety of monomers in an aqueous medium by the use of grafting method in the presence of radical initiator at a temperature of from about five degrees Centigrade to about 100 degrees Centigrade. Graft copolymers at high conversion with molecular weight up to millions can be prepared using this method.
    Type: Application
    Filed: September 15, 2008
    Publication date: December 31, 2009
    Inventors: Damodar R. Patil, Laiduien G. Fan, Joseph C. Fan, Jiangping Yu