Patents by Inventor Chunxiang Wang

Chunxiang Wang 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: 20230357220
    Abstract: Abstract: The present invention refers to compounds of formula (I). The present invention also relates to compounds of formula (I) for use as G Protein coupled Receptor 139 (GPR139) antagonists in methods of medical treatment of e.g. depression, Alzheimer’s disease, schizophrenia, drug addiction, sleep disorders, pain, and attention deficit hyperactivity disorder. Exemplary compounds are e.g. 3-((1H-pyrazol-4-yl)methyl)-6?-(phenyl)-2H-(1,2?-bipyridin)-2-one derivatives and related compounds. The present description discloses the synthesis and characterisation of exemplary compounds, pharmacological data thereof, as well as exemplary tablet formulations comprising the compounds of the invention (e.g. page 83 to page 110; examples 1 to 33; reference example 1; test examples 1 and 2; tables 1 to 4).
    Type: Application
    Filed: May 20, 2021
    Publication date: November 9, 2023
    Inventors: Tomoaki HASUI, Satoshi MIKAMI, JR., Toru YAMASHITA, Shinji NAKAMURA, Shinji MORIMOTO, Toshihiro IMAEDA, Kazuaki TAKAMI, Masaki DAINI, Hiroyuki KAKEI, Minoru NAKAMURA, Fumie YAMAGUCHI, Chunxiang WANG, Sachie TAKASHIMA, Makoto KAMATA, Yuya OGURO, Shuhei IKEDA
  • Publication number: 20230348435
    Abstract: The present invention refers to compounds of formula (I). The present invention also relates to compounds of formula (I) for use as G Protein coupled Receptor 139 (GPR139) antagonists in methods of medical treatment of e.g. depression, Alzheimer's disease schizophrenia, drug addiction, sleep disorders, pain, and attention deficit hyperactivity disorder. Exemplary compounds are e.g. 1-(OH-pyrazol-4-yl)methyl)-3-(phenyl)-1,3-dihydro-2H-imidazol-2-one derivatives and related compounds. The present description discloses the synthesis and characterisation of exemplary compounds, pharmacological data thereof, as well as exemplary tablet formulations comprising the compounds of the invention (e.g. page 100 to page 143; examples 1 to 167; test examples 1 and 2; tables 1 to 4).
    Type: Application
    Filed: May 20, 2021
    Publication date: November 2, 2023
    Inventors: Tomoaki HASUI, Satoshi MIKAMI, Toru YAMASHITA, Shinji NAKAMURA, Shinji MORIMOTO, Toshihiro IMAEDA, Kazuaki TAKAMI, Masaki DAINI, Hiroyuki KAKEI, Minoru NAKAMURA, Fumie YAMAGUCHI, Chunxiang WANG, Sachie TAKASHIMA, Shogo HASHIZUME
  • Patent number: 11603417
    Abstract: An object of the present invention is to provide a novel method of producing a nonpolar olefin polymer (e.g., a copolymer of a nonpolar olefin and a polar olefin). The present invention provides a method of producing a polar olefin polymer or copolymer, the method including the polymerization step of polymerizing a polar olefin monomer using, as a catalyst, a polymerization catalyst composition containing: 1) a metallocene complex represented by Formula (I), which contains a central metal M that is scandium (Sc) or yttrium (Y), a ligand Cp* containing a cyclopentadienyl derivative and being bound to the central metal, monoanionic ligands Q1 and Q2, and W neutral Lewis bases L wherein W is an integer of 0 to 3; and 2) an ionic compound composed of a non-coordinating anion and a cation.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: March 14, 2023
    Assignee: RIKEN
    Inventors: Chunxiang Wang, Haobing Wang, Yang Yang, Masayoshi Nishiura, Zhaomin Hou
  • Patent number: 10975418
    Abstract: The present invention provides a rapid and high-sensitivity method to detect virus by qPCR nucleic acid amplification. A viral sample containing a RNA virus such as a corona virus is mixed with a virus preservation solution and a nucleic acid amplification reaction preparation (which can be in a lyophilized powder) to prepare the PCR-sample solution. The virus preservation solution can preserve the viral sample and prevent RNA degradation at room temperature for an extended period of time. No viral nucleic acid extraction step is needed.
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: April 13, 2021
    Assignee: JIANGSU COWIN BIOTECH CO., LTD
    Inventors: Chunxiang Wang, Jinhai Guo, Huanhuan Xiao
  • Publication number: 20200278086
    Abstract: A heating device for in-service welding of oil and gas pipeline, which comprises a heating section, a heat dissipation section and a constant temperature section, wherein the heating section and the heat dissipation section are mounted on an oil and gas pipeline. The heating section heats the oil and gas pipeline to simultaneously heat the wall of the oil and gas pipeline and fluid in the oil and gas pipeline. A work station to be welded is heated by utilizing flowing of the fluid and heat conduction of the wall of the oil and gas pipeline. The heat dissipation section is mounted on the oil and gas pipeline.
    Type: Application
    Filed: February 28, 2020
    Publication date: September 3, 2020
    Inventors: Limeng Yin, Zhongwen Zhang, Cunguo Zuo, Zhangliang Xu, Chunxiang Wang
  • Publication number: 20200010581
    Abstract: An object of the present invention is to provide a novel method of producing a nonpolar olefin polymer (e.g., a copolymer of a nonpolar olefin and a polar olefin). The present invention provides a method of producing a polar olefin polymer or copolymer, the method including the polymerization step of polymerizing a polar olefin monomer using, as a catalyst, a polymerization catalyst composition containing: 1) a metallocene complex represented by Formula (I), which contains a central metal M that is scandium (Sc) or yttrium (Y), a ligand Cp* containing a cyclopentadienyl derivative and being bound to the central metal, monoanionic ligands Q1 and Q2, and W neutral Lewis bases L wherein W is an integer of 0 to 3; and 2) an ionic compound composed of a non-coordinating anion and a cation.
    Type: Application
    Filed: March 14, 2018
    Publication date: January 9, 2020
    Applicant: RIKEN
    Inventors: Chunxiang WANG, Haobing WANG, Yang YANG, Masayoshi NISHIURA, Zhaomin HOU
  • Publication number: 20180344297
    Abstract: The present invention discloses a saliva collection device provided with a collection tank for containing a liquid and a guide needle for guiding the liquid in the collection tank out of the collection tank, and a vacuum tube, wherein the vacuum tube is used to suck the liquid in the collection tank through the guide needle. The saliva collection device can accurately collect the saliva of a patient who can easily control the position of spitting saliva and the saliva volume, and can avoid collecting the foams in the saliva, so that the volume of the sampled saliva is more accurate.
    Type: Application
    Filed: November 10, 2017
    Publication date: December 6, 2018
    Applicant: CoWin Biosciences Co., Ltd.
    Inventors: Chunxiang WANG, Shanghai NIE
  • Patent number: 7666247
    Abstract: A method for spherically granulating and agglomerating metal particles such as tantalum and/or niobium powders is described in the present invention, which includes the steps of: a). comminuting the metal particles to form fine particles having D50 less than 50 ?m; b). granulating the comminuted metal particles comprising volatile liquid, for example, tantalum and/or niobium particles comprising volatile liquid, to form wet spherical particles; c). still drying the wet spherical particles and removing volatile liquid to form flowable pre-agglomerated particles with increased bulk density; d). heat treating the pre-agglomerated particles; e). screening the heat treated powder to obtain the flowable agglomerated particles. The present invention provides a flowable spherical agglomerated metal particles, and especially tantalum and/or niobium particles having improved properties. The present agglomerated tantalum powder have a flow rate of at least about 2.0 g/sec, a BET surface area of from about 0.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: February 23, 2010
    Assignee: Ningxia Orient Tantalum Industry Co., Ltd.
    Inventors: Jilin He, Luntao Pan, Aiguo Zheng, Yuewei Cheng, Yuezhong Ma, Hongdong Liu, Guoqi Yang, Chunxiang Wang, Yanping Wang, Shiping Zheng
  • Publication number: 20070193409
    Abstract: A method for spherically granulating and agglomerating metal particles such as tantalum and/or niobium powders is described in the present invention, which includes the steps of: a). comminuting the metal particles to form fine particles having D50 less than 50 ?m; b). granulating the comminuted metal particles comprising volatile liquid, for example, tantalum and/or niobium particles comprising volatile liquid, to form wet spherical particles; c). still drying the wet spherical particles and removing volatile liquid to form flowable pre-agglomerated particles with increased bulk density; d). heat treating the pre-agglomerated particles; e). screening the heat treated powder to obtain the flowable agglomerated particles. The present invention provides a flowable spherical agglomerated metal particles, and especially tantalum and/or niobium particles having improved properties. The present agglomerated tantalum powder have a flow rate of at least about 2.0 g/sec, a BET surface area of from about 0.
    Type: Application
    Filed: February 17, 2006
    Publication date: August 23, 2007
    Applicant: Ningxia Orient Tantalum Industry Co., Ltd.
    Inventors: Jilin He, Luntao Pan, Aiguo Zheng, Yuewei Cheng, Yuezhong Ma, Hongdong Liu, Guoqi Yang, Chunxiang Wang, Yanping Wang, Shiping Zheng
  • Publication number: 20070068341
    Abstract: A method for spherically granulating and agglomerating metal particles such as tantalum and/or niobium powders is described in the present invention, which includes the steps of: a). comminuting the metal particles to form fine particles having D50 less than 50 ?m; b). granulating the comminuted metal particles comprising volatile liquid, for example, tantalum and/or niobium particles comprising volatile liquid, to form wet spherical particles; c). still drying the wet spherical particles and removing volatile liquid to form flowable pre-agglomerated particles with increased bulk density; d). heat treating the pre-agglomerated particles; e). screening the heat treated powder to obtain the flowable agglomerated particles. The present invention provides a flowable spherical agglomerated metal particles, and especially tantalum and/or niobium particles having improved properties. The present agglomerated tantalum powder have a flow rate of at least about 2.0 g/sec, a BET surface area of from about 0.
    Type: Application
    Filed: February 17, 2006
    Publication date: March 29, 2007
    Applicant: Ningxia Orient Tantalum Industry Co., Ltd.
    Inventors: Yuewei Cheng, Yuezhong Ma, Hongdong Liu, Guoqi Yang, Chunxiang Wang, Yanping Wang, Shiping Zheng
  • Patent number: D926495
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: August 3, 2021
    Assignee: JIAXING SAINUO MACHINERY CO., LTD.
    Inventors: Klaus Bellingroth, Chunxiang Wang