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).
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Publication number: 20240167010Abstract: 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: ApplicationFiled: April 21, 2021Publication date: May 23, 2024Applicant: WUXI BIOLOGICS IRELAND LIMITEDInventors: Liqin XU, Fenglin WANG, Yangfang ZHOU, Yangzi PENG, Jiexing CAI, Weichang ZHOU, Xiaobo XI, Weiwen WANG, Tingting WANG, Chunsheng YANG, Quanmin CHEN, Jeremy GUO
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Publication number: 20240151384Abstract: 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: ApplicationFiled: February 11, 2022Publication date: May 9, 2024Inventors: Guofeng Chen, Shijie He, Liqin Li
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Publication number: 20240150473Abstract: The present disclosure provides engineered WNT agonists and methods of treating gastrointestinal disorders with modulators of the WNT signaling pathway.Type: ApplicationFiled: March 9, 2022Publication date: May 9, 2024Inventors: Russell FLETCHER, Sungjin LEE, Yang LI, Chenggang LU, Parthasarathy SAMPATHKUMAR, Geertrui VANHOVE, Wen-Chen YEH, Liqin XIE, Leonard PRESTA
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Publication number: 20240141049Abstract: 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: ApplicationFiled: July 28, 2023Publication date: May 2, 2024Inventors: 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
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Patent number: 11945792Abstract: 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: GrantFiled: March 3, 2021Date of Patent: April 2, 2024Assignee: Beijing Innocare Pharma Tech Co., LtdInventors: Xiangyang Chen, Zuopeng Wang, Liqin Yu
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Patent number: 8137600Abstract: 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: GrantFiled: August 20, 2007Date of Patent: March 20, 2012Assignee: Trexel, Inc.Inventors: David E. Pierick, Jere R. Anderson, Sung Woon Cha, Liqin Chen, James F. Stevenson, Dana E. Laing
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Patent number: 7473799Abstract: 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: GrantFiled: January 29, 2007Date of Patent: January 6, 2009Assignee: Nanjing University of Aeronautics and AstronauticsInventors: Liqin Chen, Lei Tian, Xiaoquan Yao
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Publication number: 20080226892Abstract: 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: ApplicationFiled: March 20, 2008Publication date: September 18, 2008Applicant: Trexel, Inc.Inventors: Levi A. Kishbaugh, Kevin J. Levesque, Albert H. Guillemette, Liqin Chen, Jingyi Xu, Kelvin T. Okamoto
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Publication number: 20080108848Abstract: 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: ApplicationFiled: January 29, 2007Publication date: May 8, 2008Inventors: Liqin Chen, Lei Tian, Xiaoquan Yao
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Patent number: 7364788Abstract: 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: GrantFiled: December 23, 2003Date of Patent: April 29, 2008Assignee: Trexel, Inc.Inventors: Levi A. Kishbaugh, Kevin J. Levesque, Albert H. Guillemette, Liqin Chen, Jingyi Xu, Kelvin T. Okamoto
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Patent number: 7361294Abstract: 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: GrantFiled: February 2, 2005Date of Patent: April 22, 2008Assignee: Trexel, Inc.Inventors: David E. Pierick, Jere R. Anderson, Sung Woon Cha, Liqin Chen, James F. Stevenson, Dana E. Laing
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Publication number: 20080090885Abstract: A method for synthesis of losartan 5-carboxylic acid (EXP-3174).Type: ApplicationFiled: January 29, 2007Publication date: April 17, 2008Inventors: Liqin Chen, Jian Li, Yingzhong Shen
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Publication number: 20080050576Abstract: 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: ApplicationFiled: August 20, 2007Publication date: February 28, 2008Applicant: Trexel, Inc.Inventors: David Pierick, Jere Anderson, Sung Cha, Liqin Chen, James Stevenson, Dana Laing
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Publication number: 20060035988Abstract: 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: ApplicationFiled: February 2, 2005Publication date: February 16, 2006Applicant: Trexel, Inc.Inventors: David Pierick, Jere Anderson, Sung Cha, Liqin Chen, James Stevenson, Dana Laing
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Publication number: 20050163881Abstract: 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: ApplicationFiled: February 2, 2005Publication date: July 28, 2005Applicant: Trexel, Inc.Inventors: David Pierick, Jere Anderson, Sung Cha, Liqin Chen, James Stevenson, Dana Laing
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Patent number: 6884823Abstract: 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: GrantFiled: June 18, 1999Date of Patent: April 26, 2005Assignee: Trexel, Inc.Inventors: David E. Pierick, Jere R. Anderson, Sung W. Cha, Liqin Chen, James F. Stevenson, Dana E. Laing
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Publication number: 20050042434Abstract: 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: ApplicationFiled: December 23, 2003Publication date: February 24, 2005Applicant: Trexel, Inc.Inventors: Levi Kishbaugh, Kevin Levesque, Albert Guillemette, Liqin Chen, Jingyi Xu, Kelvin Okamoto
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Publication number: 20040115418Abstract: 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: ApplicationFiled: August 22, 2003Publication date: June 17, 2004Applicant: Trexel, Inc.Inventors: Jere R. Anderson, Kent G. Blizard, Liqin Chen, Kelvin T. Okamoto
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Publication number: 20040038018Abstract: 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: ApplicationFiled: August 22, 2002Publication date: February 26, 2004Applicant: Trexel, Inc.Inventors: Jere R. Anderson, Kent G. Blizard, Liqin Chen, Kelvin T. Okamoto
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Publication number: 20010018121Abstract: 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: ApplicationFiled: March 26, 2001Publication date: August 30, 2001Inventors: Kelvin T. Okamoto, Liqin Chen, Theodore A. Burnham, Richard S. Straff