Patents by Inventor Xuejun Liu

Xuejun Liu 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).

  • Patent number: 10060284
    Abstract: A total air temperature (TAT) sensor assembly is disclosed. The assembly includes a housing that accommodates a temperature sensor. The assembly also includes a first airfoil that includes a leading end and a trailing end and a second airfoil that includes a leading end and a trailing end. The first and second airfoils are disposed in a spaced-apart fashion that defines a curved passageway so incoming air can flow between the first and second airfoils before engaging the housing and the temperature sensor. The trailing ends of the airfoils are disposed on opposite sides of the housing and spaced apart from the housing to permit air flowing through the curved passageway to pass the housing.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: August 28, 2018
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Xuejun Liu, Matthew R. Feulner
  • Publication number: 20180237568
    Abstract: Described herein are multifunctional polymers comprising a first repeating unit having at least one pseudo-cationic moiety, a second repeating unit having at least a hydrophobic moiety, and a third repeating unit, where the weight-average molecular weight is less than about 10,000 Da. In one embodiment the polymers exhibit antimicrobial activity. Also provided are compositions formulated with the multifunctional polymers, and a method of providing antimicrobial activity.
    Type: Application
    Filed: April 6, 2018
    Publication date: August 23, 2018
    Inventors: Jui-Chang Chuang, Xuejun Liu, Osama M. Musa, Karen Winkowski
  • Patent number: 9914795
    Abstract: Described herein is a class of non-homopolymers polymerized from at least: (A) 10-22 mole percent of at least one N-vinyl lactam, (B) 30-35 mole percent of at least one monomer selected from the group consisting of acrylic acid, methacrylic acid, and combinations thereof, (C) 40-52 mole percent of at least one (meth)acrylate of a straight- or branched-chain alkyl alcohol, and (D) 5-20 mole percent of at least one (meth)acrylate of a saturated or unsaturated cyclic alcohol having 6 to 20 carbon atoms. In one embodiment, the non-homopolymers exhibit solubility in the lower molecular weight alcohols. The non-homopolymers may be used in personal care or performance chemicals compositions. In one embodiment, the polymers are used in various personal care formulations, such as used for skin, sun, hair, and preservatives.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: March 13, 2018
    Assignee: ISP INVESTMENTS LLC
    Inventors: Xuejun Liu, Osama M. Musa
  • Patent number: 9718437
    Abstract: The present invention provides a winder used for a force limiting safety belt, comprising: a winder frame, a reel and a torsion bar. wherein, the winder frame comprises two opposite sidewalls, the corresponding positions of the two sidewalls having circular openings provided, the circular openings having internal toothed segments; the reel comprising a spindle through hole provided along the central axis of the spindle, two detachable end covers provided respectively on the two ends of the spindle, the end covers having external teeth provided along the periphery of the end covers; the torsion bar is divided into two segments in axial direction which are connected to each other by adjoining ends; in a free state, the reel is able to rotate and float provided within the winder frame, two end covers being provided in the circular through opening on the two sidewalls of the winder frame.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: August 1, 2017
    Assignee: HELIA TECHNOLOGY (SHANGHAI) CO., LTD
    Inventor: Xuejun Liu
  • Publication number: 20170166543
    Abstract: In alternative embodiments the invention provides methods for synthesizing AB-007 (also called loxistatin, E64d, EST or ((2S,3S)-trans-epoxysuccinyl-L-leucyl-amido-3-methylbutane ethyl ester) and its acid form E64c (loxistatin acid), and various synthetic intermediates, and deuterated forms of these compounds, and stereoisomers thereof. In alternative embodiments the invention provides a tosylate salt of AB-007-4 or a tosylate salt of L-leucine isoamylamine, or equivalents thereof. A synthetic scheme of the invention provides kilogram quantities of AB-007 manufactured according to current good manufacturing practices (cGMP's), consistent with US FDA requirements for human use. In alternative embodiments the invention provides a tosylate salt of AB-007-4 or a tosylate salt of L-leucine isoamylamine, or equivalents thereof.
    Type: Application
    Filed: February 2, 2015
    Publication date: June 15, 2017
    Inventors: Robert J. Ternansky, Hui Liu, Emerich Eisenreich, Kenneth A. Haines, Daniel Levin, Xuejun Liu
  • Publication number: 20170121466
    Abstract: Provided are multifunctional polymers comprising at least one anhydride repeating unit with at least one pseudo-cationic moiety graft and at least one hydrophobic graft. The grafting functionalizations can occur before, during, or after polymerizing the monomer(s). The anhydride employed may be partially or fully opened to provide amic acids, carboxylic acids, carboxylic acidic salts, imides, esters, and mixtures thereof. The polymers also may comprise other repeating units, including, but not limited to, alpha-olefins. In one embodiment the polymers exhibit antimicrobial activity, and can be employed in a wide variety of compositions, including those where antimicrobial activity is useful. A method of providing microbial activity also is provided.
    Type: Application
    Filed: January 11, 2017
    Publication date: May 4, 2017
    Inventors: Osama M. Musa, Xuejun Liu, Jui-Chang Chuang, Karen Winkowski
  • Patent number: 9371292
    Abstract: Disclosed are as represented by Formula (I) a quinazoline derivative and a pharmaceutical acceptable salt thereof, or, an enantiomer, a non-enantiomer, a tautomer, a racemate, a solvate, a metabolic precursor, or a prodrug of both. Also disclosed are a preparation method therefor, an intermediate, a pharmaceutical composition having the quinazoline derivative, and an application thereof. The quinazoline derivative of the present invention is provided with improved anti-tumor activity.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: June 21, 2016
    Assignees: SHANGHAI PHARMACEUTICALS HOLDINGS CO., LTD., ZHEJIANG UNIVERSITY
    Inventors: Guangxin Xia, Jingkang Shen, Yongping Yu, Wenteng Chen, Chunchun Zhang, Yu Hao, Jing Zhang, Bojun Li, Xuejun Liu
  • Publication number: 20160032757
    Abstract: A total air temperature (TAT) sensor assembly is disclosed. The assembly includes a housing that accommodates a temperature sensor. The assembly also includes a first airfoil that includes a leading end and a trailing end and a second airfoil that includes a leading end and a trailing end. The first and second airfoils are disposed in a spaced-apart fashion that defines a curved passageway so incoming air can flow between the first and second airfoils before engaging the housing and the temperature sensor. The trailing ends of the airfoils are disposed on opposite sides of the housing and spaced apart from the housing to permit air flowing through the curved passageway to pass the housing.
    Type: Application
    Filed: December 16, 2013
    Publication date: February 4, 2016
    Applicant: United Technologies Corporation
    Inventors: Xuejun Liu, Matthew R. Feulner
  • Publication number: 20150376665
    Abstract: The present invention provides a process for the preparation of enantiomerically enriched, deuterated secondary alcohols of Formula 1-A by employing ketoreductases or carbonyl reductases without reducing deuterium incorporation.
    Type: Application
    Filed: July 1, 2015
    Publication date: December 31, 2015
    Inventors: Ramanaiah C. Kanamarlapudi, Steven A. Weissman, Emerich Eisenreich, Xuejun Liu
  • Publication number: 20150353666
    Abstract: Family of non-homopolymers synthesized from N-vinyl lactam, (meth)acrylic acid, hydrophobic (meth)acrylic ester of a straightchain or branched-chain alkyl alcohol and monomer selected from the group consisting of functionalized and unfunctionalized: dialkyl maleates, dialkyl fumarates, and combinations thereof. The non-homopolymers may exhibit solubility in one or more lower molecular weight alcohols and/or a glass transition temperature greater than 80° C.
    Type: Application
    Filed: February 27, 2014
    Publication date: December 10, 2015
    Applicant: ISP INVESTMENTS INS.
    Inventors: Jui-Chang CHUANG, Xuejun LIU, Osama M. MUSA, David C. STREULI
  • Publication number: 20150353663
    Abstract: Described herein is a class of non-homopolymers polymerized from at least: (A) 10-22 mole percent of at least one N-vinyl lactam, (B) 30-35 mole percent of at least one monomer selected from the group consisting of acrylic acid, methacrylic acid, and combinations thereof, (C) 40-52 mole percent of at least one (meth)acrylate of a straight- or branched-chain alkyl alcohol, and (D) 5-20 mole percent of at least one (meth)acrylate of a saturated or unsaturated cyclic alcohol having 6 to 20 carbon atoms. In one embodiment, the non-homopolymers exhibit solubility in the lower molecular weight alcohols. The non-homopolymers may be used in personal care or performance chemicals compositions. In one embodiment, the polymers are used in various personal care formulations, such as used for skin, sun, hair, and preservatives.
    Type: Application
    Filed: January 9, 2014
    Publication date: December 10, 2015
    Inventors: Xuejun LIU, Osama M. MUSA
  • Patent number: 9102698
    Abstract: The present disclosure provides a method for the synthesis of IB-MECA. More specifically, the present disclosure provides a simple and high yield method for Good Manufacturing Production (GMP) of IB-MECA. The method involves the reaction of 6-halopurine-9-riboside with a diol protecting reagent; oxidation of the primary alcohol in the diol protected 6-halopurine-9-riboside with a diol protecting reagent; oxidation of the primary alcohol in the diol protected 6-halopurine; reaction of the diol protected 6-halopurine with a nucleophile (e.g. methylamine); substitution of the halogen group with iodobenzylamine and removal of the diol protecting group.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: August 11, 2015
    Assignee: CAN-FITE BIOPHARMA LTD.
    Inventors: Paul Bruzinski, Xuejun Liu, Cameron Gibb, Pedro E. HErnandez-Abad
  • Publication number: 20150210247
    Abstract: The present invention provides a winder used for a force limiting safety belt, comprising: a winder frame, a reel and a torsion bar. wherein, the winder frame comprises two opposite sidewalls, the corresponding positions of the two sidewalls having circular openings provided, the circular openings having internal toothed segments; the reel comprising a spindle through hole provided along the central axis of the spindle, two detachable end covers provided respectively on the two ends of the spindle, the end covers having external teeth provided along the periphery of the end covers; the torsion bar is divided into two segments in axial direction which are connected to each other by adjoining ends; in a free state, the reel is able to rotate and float provided within the winder frame, two end covers being provided in the circular through opening on the two sidewalls of the winder frame.
    Type: Application
    Filed: August 23, 2013
    Publication date: July 30, 2015
    Applicant: HELIA TECHNOLOGY (SHANGHAI) CO., LTD
    Inventor: Xuejun Liu
  • Patent number: 9085788
    Abstract: The present invention provides a convenient and efficient process for the preparation of enantiomerically enriched, deuterated secondary alcohols without reducing deuterium incorporation.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: July 21, 2015
    Assignee: Concert Pharmaceuticals, Inc.
    Inventors: Ramanaiah C. Kanamarlapudi, Steven A. Weissman, Emerich Eisenreich, Xuejun Liu
  • Patent number: 9074233
    Abstract: The present invention provides a process for the preparation of enantiomerically enriched, deuterated secondary alcohols of Formula 1-A by employing ketoreductases or carbonyl reductases without reducing deuterium incorporation.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: July 7, 2015
    Assignee: Concert Pharmaceuticals, Inc.
    Inventors: Ramanaiah C. Kanamarlapudi, Steven A. Weissman, Emerich Eisenreich, Xuejun Liu
  • Publication number: 20150051352
    Abstract: Provided are multifunctional polymers comprising at least one anhydride repeating unit with at least one pseudo-cationic moiety graft and at least one hydrophobic graft. The grafting functionalizations can occur before, during, or after polymerizing the monomer(s). The anhydride employed may be partially or fully opened to provide amic acids, carboxylic acids, carboxylic acidic salts, imides, esters, and mixtures thereof. The polymers also may comprise other repeating units, including, but not limited to, alpha-olefins. In one embodiment the polymers exhibit antimicrobial activity, and can be employed in a wide variety of compositions, including those where antimicrobial activity is useful. A method of providing microbial activity also is provided.
    Type: Application
    Filed: March 11, 2013
    Publication date: February 19, 2015
    Inventors: Osama M. Musa, Xuejun Liu, Jui-Chang Chuang, Karen Winkowski
  • Publication number: 20150044161
    Abstract: Described herein are multifunctional polymers comprising a first repeating unit having at least one pseudo-cationic moiety, a second repeating unit having at least a hydrophobic moiety, and a third repeating unit, where the weight-average molecular weight is less than about 10,000 Da. In one embodiment the polymers exhibit antimicrobial activity. Also provided are compositions formulated with the multifunctional polymers, and a method of providing antimicrobial activity.
    Type: Application
    Filed: March 15, 2013
    Publication date: February 12, 2015
    Applicant: ISP Investments Inc.
    Inventors: Jui-Chang Chuang, Xuejun Liu, Osama M. Musa, Karen Winkowski
  • Publication number: 20140206687
    Abstract: Disclosed are as represented by Formula (I) a quinazoline derivative and a pharmaceutical acceptable salt thereof, or, an enantiomer, a non-enantiomer, a tautomer, a racemate, a solvate, a metabolic precursor, or a prodrug of both. Also disclosed are a preparation method therefor, an intermediate, a pharmaceutical composition having the quinazoline derivative, and an application thereof. The quinazoline derivative of the present invention is provided with improved anti-tumor activity.
    Type: Application
    Filed: July 27, 2012
    Publication date: July 24, 2014
    Applicants: ZHEJIANG UNIVERSITY, SHANGHAI PHARMACEUTICALS HOLDING CO., LTD.
    Inventors: Guangxin Xia, Jingkang Shen, Yongping Yu, Wenteng Chen, Chunchun Zhang, Yu Hao, Jing Zhang, Bojun Li, Xuejun Liu
  • Publication number: 20140017739
    Abstract: The present invention provides a convenient and efficient process for the preparation of enantiomerically enriched, deuterated secondary alcohols without reducing deuterium incorporation.
    Type: Application
    Filed: September 1, 2011
    Publication date: January 16, 2014
    Applicant: CONCERT PHARMACEUTICALS, INC.
    Inventors: Ramanaiah C. Kanamarlapudi, Steven A. Weissman, Emerich Eisenreich, Xuejun Liu
  • Publication number: 20130280768
    Abstract: The present invention provides a process for the preparation of enantiomerically enriched, deuterated secondary alcohols of Formula 1-A by employing ketoreductases or carbonyl reductases without reducing deuterium incorporation.
    Type: Application
    Filed: September 1, 2011
    Publication date: October 24, 2013
    Applicant: CONCERT PHARMACEUTICALS, INC.
    Inventors: Ramanaiah C. Kanamarlapudi, Steven A. Weissman, Emerich Eisenreich, Xuejun Liu