Patents by Inventor Liqin Chen

Liqin Chen 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: 20240167010
    Abstract: Provided are a genetically modified cell line producing a recombinant glycoprotein having a mannose-terminated N-glycan and a method for producing the recombinant glycoprotein or a method for generating the cell, clone or cell line. The cell line comprises an insertion of less than 600 bp in the coding region of a chromosomal sequence encoding MGAT1.
    Type: Application
    Filed: April 21, 2021
    Publication date: May 23, 2024
    Applicant: WUXI BIOLOGICS IRELAND LIMITED
    Inventors: Liqin XU, Fenglin WANG, Yangfang ZHOU, Yangzi PENG, Jiexing CAI, Weichang ZHOU, Xiaobo XI, Weiwen WANG, Tingting WANG, Chunsheng YANG, Quanmin CHEN, Jeremy GUO
  • Publication number: 20240151384
    Abstract: In an embodiment a lamp includes a light source having a light source circuit board and a light emitting element arranged on the light source circuit board, a driver configured to drive the light source and having a driving circuit board and a driving electronic element arranged on the driving circuit board, a connector connectable to a power source, wherein the driver is connected to the connector such as to be spatially separated from the light source and a heat sink inside which the light source and the connector are fixedly attached in such a manner that the light source and the driver are radially surrounded by the heat sink, wherein the connector includes a supporting column configured to support the driving circuit board and a retainer configured to hold the driving circuit board.
    Type: Application
    Filed: February 11, 2022
    Publication date: May 9, 2024
    Inventors: Guofeng Chen, Shijie He, Liqin Li
  • Publication number: 20240150473
    Abstract: The present disclosure provides engineered WNT agonists and methods of treating gastrointestinal disorders with modulators of the WNT signaling pathway.
    Type: Application
    Filed: March 9, 2022
    Publication date: May 9, 2024
    Inventors: Russell FLETCHER, Sungjin LEE, Yang LI, Chenggang LU, Parthasarathy SAMPATHKUMAR, Geertrui VANHOVE, Wen-Chen YEH, Liqin XIE, Leonard PRESTA
  • Publication number: 20240141049
    Abstract: The present invention provides Wnt pathway agonists and related compositions, which may be used in any of a variety of therapeutic methods for the treatment of diseases.
    Type: Application
    Filed: July 28, 2023
    Publication date: May 2, 2024
    Inventors: Yang LI, Tom Zhiye YUAN, Aaron Ken SATO, Wen-Chen YEH, Claudia Yvonne JANDA, Tristan William FOWLER, Helene BARIBAULT, Kuo-Pao LAI, Liqin XIE, Randall J. BREZSKI, Chenggang LU
  • Patent number: 11945792
    Abstract: The present invention relates to various crystalline forms of 6-(1-acryloylpiperidin-4-yl)-2-(4-phenoxyphenyl)nicotinamide. The present invention also relates to pharmaceutical compositions comprising the crystalline forms.
    Type: Grant
    Filed: March 3, 2021
    Date of Patent: April 2, 2024
    Assignee: Beijing Innocare Pharma Tech Co., Ltd
    Inventors: Xiangyang Chen, Zuopeng Wang, Liqin Yu
  • Patent number: 8137600
    Abstract: Injection molding systems and methods useful for making microcellular foamed materials are provided as well as microcellular articles. Pressure drop rate and shear rate are important features in some embodiments, and the invention provides systems for controlling these parameters in an injection molding system. Another aspect involves an injection molding system including a nucleator that is upstream of a pressurized mold. Another aspect involves an extrusion system with the reciprocating screw for forming a single phase solution of non-nucleated blowing agent and polymeric material. Another aspect involves very thin walled microcellular material and very thin walled polymeric material. Another aspect provides a method for producing high weight reductions in very thin-walled parts with surfaces that have no noticeable differences from non-foamed parts.
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: March 20, 2012
    Assignee: Trexel, Inc.
    Inventors: David E. Pierick, Jere R. Anderson, Sung Woon Cha, Liqin Chen, James F. Stevenson, Dana E. Laing
  • Patent number: 7473799
    Abstract: A process for the preparation of disubstituted adamantine derivatives characterized by the factor that the aromatic receptors can be a series of halide anisole, phenol, toluene, naphthalene, thiophene, or furan and their substituted derivatives. The synthesized disubstituted adamantine derivatives were subsequently converted into a new class of synthetic retinoids of pharmaceutical importance.
    Type: Grant
    Filed: January 29, 2007
    Date of Patent: January 6, 2009
    Assignee: Nanjing University of Aeronautics and Astronautics
    Inventors: Liqin Chen, Lei Tian, Xiaoquan Yao
  • Publication number: 20080226892
    Abstract: Polymer molding processes, such as injection-molding processes, include use of a viscosity-reducing supercritical fluid additive resulting in less breakage of reinforcing fibers upon introduction into the mold.
    Type: Application
    Filed: March 20, 2008
    Publication date: September 18, 2008
    Applicant: Trexel, Inc.
    Inventors: Levi A. Kishbaugh, Kevin J. Levesque, Albert H. Guillemette, Liqin Chen, Jingyi Xu, Kelvin T. Okamoto
  • Publication number: 20080108848
    Abstract: A process for the preparation of disubstituted adamantine derivatives characterized by the factor that the aromatic receptors can be a series of halide anisole, phenol, toluene, naphthalene, thiophene, or furan and their substituted derivatives. The synthesized disubstituted adamantine derivatives were subsequently converted into a new class of synthetic retinoids of pharmaceutical importance.
    Type: Application
    Filed: January 29, 2007
    Publication date: May 8, 2008
    Inventors: Liqin Chen, Lei Tian, Xiaoquan Yao
  • Patent number: 7364788
    Abstract: Polymer molding processes, such as injection-molding processes, include use of a viscosity-reducing supercritical fluid additive resulting in less breakage of reinforcing fibers upon introduction into the mold.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: April 29, 2008
    Assignee: Trexel, Inc.
    Inventors: Levi A. Kishbaugh, Kevin J. Levesque, Albert H. Guillemette, Liqin Chen, Jingyi Xu, Kelvin T. Okamoto
  • Patent number: 7361294
    Abstract: Injection molding systems and methods useful for making microcellular foamed materials are provided as well as microcellular articles. Pressure drop rate and shear rate are important features in some embodiments, and the invention provides systems for controlling these parameters in an injection molding system. Another aspect involves an injection molding system including a nucleator that is upstream of a pressurized mold. Another aspect involves an extrusion system with the reciprocating screw for forming a single phase solution of non-nucleated blowing agent and polymeric material. Another aspect involves very thin walled microcellular material and very thin walled polymeric material. Another aspect provides a method for producing high weight reductions in very thin-walled parts with surfaces that have no noticeable differences from non-foamed parts.
    Type: Grant
    Filed: February 2, 2005
    Date of Patent: April 22, 2008
    Assignee: Trexel, Inc.
    Inventors: David E. Pierick, Jere R. Anderson, Sung Woon Cha, Liqin Chen, James F. Stevenson, Dana E. Laing
  • Publication number: 20080090885
    Abstract: A method for synthesis of losartan 5-carboxylic acid (EXP-3174).
    Type: Application
    Filed: January 29, 2007
    Publication date: April 17, 2008
    Inventors: Liqin Chen, Jian Li, Yingzhong Shen
  • Publication number: 20080050576
    Abstract: Injection molding systems and methods useful for making microcellular foamed materials are provided as well as microcellular articles. Pressure drop rate and shear rate are important features in some embodiments, and the invention provides systems for controlling these parameters in an injection molding system. Another aspect involves an injection molding system including a nucleator that is upstream of a pressurized mold. Another aspect involves an extrusion system with the reciprocating screw for forming a single phase solution of non-nucleated blowing agent and polymeric material. Another aspect involves very thin walled microcellular material and very thin walled polymeric material. Another aspect provides a method for producing high weight reductions in very thin-walled parts with surfaces that have no noticeable differences from non-foamed parts.
    Type: Application
    Filed: August 20, 2007
    Publication date: February 28, 2008
    Applicant: Trexel, Inc.
    Inventors: David Pierick, Jere Anderson, Sung Cha, Liqin Chen, James Stevenson, Dana Laing
  • Publication number: 20060035988
    Abstract: Injection molding systems and methods useful for making microcellular foamed materials are provided as well as microcellular articles. Pressure drop rate and shear rate are important features in some embodiments, and the invention provides systems for controlling these parameters in an injection molding system. Another aspect involves an injection molding system including a nucleator that is upstream of a pressurized mold. Another aspect involves an extrusion system with the reciprocating screw for forming a single phase solution of non-nucleated blowing agent and polymeric material. Another aspect involves very thin walled microcellular material and very thin walled polymeric material. Another aspect provides a method for producing high weight reductions in very thin-walled parts with surfaces that have no noticeable differences from non-foamed parts.
    Type: Application
    Filed: February 2, 2005
    Publication date: February 16, 2006
    Applicant: Trexel, Inc.
    Inventors: David Pierick, Jere Anderson, Sung Cha, Liqin Chen, James Stevenson, Dana Laing
  • Publication number: 20050163881
    Abstract: Injection molding systems and methods useful for making microcellular foamed materials are provided as well as microcellular articles. Pressure drop rate and shear rate are important features in some embodiments, and the invention provides systems for controlling these parameters in an injection molding system. Another aspect involves an injection molding system including a nucleator that is upstream of a pressurized mold. Another aspect involves an extrusion system with the reciprocating screw for forming a single phase solution of non-nucleated blowing agent and polymeric material. Another aspect involves very thin walled microcellular material and very thin walled polymeric material. Another aspect provides a method for producing high weight reductions in very thin-walled parts with surfaces that have no noticeable differences from non-foamed parts.
    Type: Application
    Filed: February 2, 2005
    Publication date: July 28, 2005
    Applicant: Trexel, Inc.
    Inventors: David Pierick, Jere Anderson, Sung Cha, Liqin Chen, James Stevenson, Dana Laing
  • Patent number: 6884823
    Abstract: Injection molding systems and methods useful for making microcellular foamed materials are provided as well as microcellular articles. Pressure drop rate and shear rate are important features in some embodiments, and the invention provides systems for controlling these parameters in an injection molding system. Another aspect involves an injection molding system including a nucleator that is upstream of a pressurized mold. Another aspect involves an extrusion system with the reciprocating screw for forming a single phase solution of non-nucleated blowing agent and polymeric material. Another aspect involves very thin walled microcellular material and very thin walled polymeric material. Another aspect provides a method for producing high weight reductions in very thin-walled parts with surfaces that have no noticeable differences from non-foamed parts.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: April 26, 2005
    Assignee: Trexel, Inc.
    Inventors: David E. Pierick, Jere R. Anderson, Sung W. Cha, Liqin Chen, James F. Stevenson, Dana E. Laing
  • Publication number: 20050042434
    Abstract: Polymer molding processes, such as injection-molding processes, include use of a viscosity-reducing supercritical fluid additive resulting in less breakage of reinforcing fibers upon introduction into the mold.
    Type: Application
    Filed: December 23, 2003
    Publication date: February 24, 2005
    Applicant: Trexel, Inc.
    Inventors: Levi Kishbaugh, Kevin Levesque, Albert Guillemette, Liqin Chen, Jingyi Xu, Kelvin Okamoto
  • Publication number: 20040115418
    Abstract: Foams with low water absorption are provided, along with thermoplastic elastomeric foam materials and methods of forming the same. In some embodiments, the TPE foams have a low water absorption. Microcellular foams are included. Processing conditions (e.g., blowing agent type and content, die geometry, exit melt temperature, among others) may be controlled to produce foams having desirable characteristics, such as low water absorption.
    Type: Application
    Filed: August 22, 2003
    Publication date: June 17, 2004
    Applicant: Trexel, Inc.
    Inventors: Jere R. Anderson, Kent G. Blizard, Liqin Chen, Kelvin T. Okamoto
  • Publication number: 20040038018
    Abstract: Foams with low water absorption are provided, along with thermoplastic elastomeric foam materials and methods of forming the same. In some embodiments, the TPE foams have a low water absorption. Microcellular foams are included. Processing conditions (e.g., blowing agent type and content, die geometry, exit melt temperature, among others) may be controlled to produce foams having desirable characteristics, such as low water absorption.
    Type: Application
    Filed: August 22, 2002
    Publication date: February 26, 2004
    Applicant: Trexel, Inc.
    Inventors: Jere R. Anderson, Kent G. Blizard, Liqin Chen, Kelvin T. Okamoto
  • Publication number: 20010018121
    Abstract: The present invention provides microcellular articles, as well as methods and apparatuses for producing polymeric foams, and, in particular microcellular material. The methods involve forming a gas blanket within a polymer processing die that prevents contact between the polymer melt and surfaces of the die during extrusion. In one set of embodiments, the gas blanket is provided by gas diffusing out of surfaces of the nucleated polymer material. In other embodiments, the gas blanket is formed by introducing a gas from an external source into the polymer flow channel within the die. The dies, according to the invention, are specially configured to generate and to support the gas blanket. The extruded foams are free of surface defects that, typically, arise from contact between the polymer melt and the die surfaces.
    Type: Application
    Filed: March 26, 2001
    Publication date: August 30, 2001
    Inventors: Kelvin T. Okamoto, Liqin Chen, Theodore A. Burnham, Richard S. Straff