Patents by Inventor Zhongqi Shen

Zhongqi Shen 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: 11104860
    Abstract: A lubricating composition comprises an amide and at least one additive. The amide is the reaction product of a secondary, branched amine and a carboxylic acid. The carboxylic acid may be a monocarboxylic acid or a dicarboxylic acid, including dimer acid. The amide is hydrolytically stable, and may be used to increase the hydrolytic stability of the lubricant composition. Alternatively, the amide may be used to increase the additive solubility or detergency of the lubricant composition.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: August 31, 2021
    Assignee: Croda, Inc.
    Inventors: Xin Chen, Alexei Nikolaevich Kurchan, Zhongqi Shen
  • Patent number: 10717917
    Abstract: Provided is a method of dispersing asphaltenes to inhibit asphaltene precipitation and/or deposition in a hydrocarbon. The method includes adding to the hydrocarbon an asphaltene dispersing agent which is an ester of a mono-carboxylic fatty acid and a sugar. The sugar has at least 4 hydroxyl groups. In addition, more than one of the hydroxyl groups on the sugar are reacted with the mono-carboxylic fatty acid to form the ester.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: July 21, 2020
    Assignee: Croda, Inc.
    Inventors: Xin Chen, Min Ma Wang, Craig Michael Sungail, Zhongqi Shen
  • Publication number: 20190330514
    Abstract: A method of dispersing asphaltenes to inhibit asphaltenes precipitation and/or deposition in a hydrocarbon is disclosed. An asphaltene dispersing agent is added to the hydrocarbon. The asphaltene dispersing agent is an ester of a mono-carboxylic fatty acid and a sugar. The sugar has at least 4 hydroxyl groups and more than one of the hydroxyl groups on the sugar are reacted with the mono-carboxylic fatty acid to form the ester. A composition comprising the asphaltene dispersing agent is also disclosed.
    Type: Application
    Filed: June 20, 2017
    Publication date: October 31, 2019
    Applicant: Croda, Inc.
    Inventors: Xin Chen, Min Ma Wang, Craig Michael Sungail, Zhongqi Shen
  • Publication number: 20170073609
    Abstract: A lubricating composition comprises an amide and at least one additive. The amide is the reaction product of a secondary, branched amine and a carboxylic acid. The carboxylic acid may be a monocarboxylic acid or a dicarboxylic acid, including dimer acid. The amide is hydrolytically stable, and may be used to increase the hydrolytic stability of the lubricant composition. Alternatively, the amide may be used to increase the additive solubility or detergency of the lubricant composition.
    Type: Application
    Filed: May 14, 2015
    Publication date: March 16, 2017
    Applicant: CORDA, INC.
    Inventors: XIN CHEN, ALEXEI NIKOLAEVICH KURCHAN, ZHONGQI SHEN
  • Patent number: 7671056
    Abstract: The present invention relates to novel piperazine-piperidine compounds. The compounds are useful as 5-HT1A binding agents, particularly as 5-HT1A receptor antagonists and agonists. These compounds are useful in treating central nervous system disorders, such as cognition disorders, anxiety disorders, depression and sexual dysfunction. The invention relates to compounds and pharmaceutically acceptable salts of formula (I?): wherein R1-R16, Ra, Rb, and n are set forth in the specification. The invention also relates to pharmaceutical compositions comprising compounds and pharmaceutically acceptable salts of formula (I?).
    Type: Grant
    Filed: June 9, 2006
    Date of Patent: March 2, 2010
    Assignee: Wyeth LLC
    Inventors: Magda Asselin, George Theodore Grosu, Annmarie Louise Sabb, Wayne Everett Childers, Lisa Marie Havran, Zhongqi Shen, James Jacob Bicksler, Dan Chaekoo Chong
  • Patent number: 7495111
    Abstract: 3-Amino chroman and 2-amino tetralin derivatives and compositions containing such compounds are disclosed. Such compounds are useful for modulating activity of a 5-HT1A receptor (agonizing or antagonizing) in a patient. These compounds are further useful for inhibiting binding to a serotonin receptor. Methods of using the 3-amino chroman and 2-amino tetralin compounds and compositions containing such compounds in the treatment of serotonin disorders, such as depression and anxiety, are also disclosed.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: February 24, 2009
    Assignee: Wyeth
    Inventors: P. Sivaramakrishnan Ramamoorthy, Zhongqi Shen, Boyd L. Harrison
  • Publication number: 20080262228
    Abstract: The present invention relates to novel metabolites of 5-Fluoro-8-{4-[4-(6-methoxyquinolin-8-yl)piperazin-1-yl]piperidin-1-yl}quinoline, which can be useful in treating CNS disorders. The present invention further relates to processes for their preparation, to pharmaceutical compositions comprising them, and to methods of using them.
    Type: Application
    Filed: November 27, 2007
    Publication date: October 23, 2008
    Applicant: Wyeth
    Inventors: Jianyao Wang, Alana Upthagrove, Lin Deng, Wayne Everett Childers, Zhongqi Shen, William Demaio, Robin D. Moore, Zeen Tong, Li Shen, Pixu Li, Michael K. May
  • Publication number: 20070149585
    Abstract: 3-Amino chroman and 2-amino tetralin derivatives and compositions containing such compounds are disclosed. Such compounds are useful for modulating activity of a 5-HT1A receptor (agonizing or antagonizing) in a patient. These compounds are further useful for inhibiting binding to a serotonin receptor. Methods of using the 3-amino chroman and 2-amino tetralin compounds and compositions containing such compounds in the treatment of serotonin disorders, such as depression and anxiety, are also disclosed.
    Type: Application
    Filed: June 15, 2006
    Publication date: June 28, 2007
    Applicant: Wyeth
    Inventors: P. Ramamoorthy, Zhongqi Shen, Boyd Harrison
  • Publication number: 20070027160
    Abstract: The present invention relates to novel piperazine-piperidine compounds. The compounds are useful as 5-HT1A binding agents, particularly as 5-HT1A receptor antagonists and agonists. These compounds are useful in treating central nervous system disorders, such as cognition disorders, anxiety disorders, depression and sexual dysfunction.
    Type: Application
    Filed: June 9, 2006
    Publication date: February 1, 2007
    Applicant: Wyeth
    Inventors: Magda Asselin, George Grosu, Annmarie Sabb, Wayne Childers, Lisa Havran, Zhongqi Shen, James Bicksler, Dan Chong