Patents by Inventor Zhen-jia Chen

Zhen-jia 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: 20240309147
    Abstract: Disclosed herein is a two-component system for preparing deodorant polyurethane foams, which system includes component A including (b) at least one compound having at least two hydrogen atoms reactive toward isocyanates, (c) optionally chain extender and/or crosslinking agent, (d) blowing agent, (e) catalyst, and (f) optionally auxiliaries and additives, and component B including (a) at least one polyisocyanate, and (g) at least one anhydride. Further disclosed herein are a method of preparing deodorant polyurethane foams by the two-component system and a method of using such polyurethane foams in certain applications.
    Type: Application
    Filed: January 17, 2022
    Publication date: September 19, 2024
    Inventors: Dong Dong PAN, Yinghao LIU, Hui QIU, Lu LIU, Zhen Jia CHEN
  • Patent number: 6458823
    Abstract: This invention concerns the treatment of smooth muscle spasticity or excess muscle contraction such as urge urinary incontinence with a compound of the formula wherein: R1 and R2 are independently straight chain alkyl of 1 to 6 carbon atoms, branched alkyl of 3 to 6 carbons atoms, or cycloalkyl of 3 to 6 carbons atoms where R2 may be substituted by F, Cl, Br, I, OH, NH2, cyano, C1-C6 alkoxy, C1-C6alkylthio, COOH or COOC1-C6 alkyl; R3 is an aryl or heteroaryl as defined herein, optionally substituted with 0 to 4 groups selected independently from C1-C6 alkyl, C1-C6 alkoxy, cyano, F, Cl, Br, C1-C6 alkylthio, CO2R1, CONH2, OH, NH2, and NO2; n is 0 or 1; R4 is a straight chain alkyl group of 1 to 10 carbons atoms, a branched alkyl of 3 to 10 carbons, or a cycloalkyl of 3 to 10 carbons; and all crystalline forms and the pharmaceutically acceptable salts thereof.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: October 1, 2002
    Assignee: Wyeth
    Inventors: Adam Matthew Gilbert, Zhen-jia Chen
  • Publication number: 20020032198
    Abstract: This invention concerns the treatment of smooth muscle spasticity or excess muscle contraction such as urge urinary incontinence with a compound of the formula 1
    Type: Application
    Filed: September 25, 2001
    Publication date: March 14, 2002
    Applicant: American Home Products Corporation
    Inventors: Adam Matthew Gilbert, Zhen-jia Chen
  • Patent number: 6319941
    Abstract: This invention concerns the treatment of smooth muscle spasticity or excess muscle contraction such as urge urinary incontinence with a compound of the formula wherein: R1 and R2 are independently straight chain alkyl of 1 to 6 carbon atoms, branched alkyl of 3 to 6 carbons atoms, or cycloalkyl of 3 to 6 carbons atoms where R1 and R2 may be substituted by F, Cl, Br, I, OH, NH2, cyano, C1-C6 alkoxy, C1-C6alkylthio, COOH or COOC1-C6 alkyl; R3 is an aryl or heteroaryl as defined herein, optionally substituted with 0 to 4 groups selected independently from C1-C6 alkyl, C1-C6 alkoxy, cyano, F, Cl, Br, C1-C6 alkylthio, CO2R1, CONH2, OH, NH2, and NO2; n is 0 or 1; R4 is a straight chain alkyl group of 1 to 10 carbons atoms, a branched alkyl of 3 to 10 carbons, or a cycloalkyl of 3 to 10 carbons; and all crystalline forms and the pharmaceutically acceptable salts thereof.
    Type: Grant
    Filed: September 6, 2000
    Date of Patent: November 20, 2001
    Assignee: American Home Products Corporation
    Inventors: Adam Matthew Gilbert, Zhen-jia Chen
  • Patent number: 6313149
    Abstract: This invention concerns the treatment of smooth muscle spasticity or excess muscle contraction such as urge urinary incontinence with a compound of the formula wherein: R1 and R2 are independently straight chain alkyl of 1 to 6 carbon atoms, branched alkyl of 3 to 6 carbons atoms, or cycloalkyl of 3 to 6 carbons atoms where R1 R2 may be substituted by F, Cl, Br, I, OH, NH2, cyano, C1-C6 alkoxy, C1-C6alkylthio, COOH or COOC1-C6 alkyl; R3 is an aryl or heteroaryl as defined herein, optionally substituted with 0 to 4 groups selected independently from C1-C6 alkyl, C1-C6 alkoxy, cyano, F, Cl, Br, C1-C6 alkylthio, CO2R1, CONH2, OH, NH2, and NO2; n is 0 or 1; R4 is a straight chain alkyl group of 1 to 10 carbons atoms, a branched alkyl of 3 to 10 carbons, or a cycloalkyl of 3 to 10 carbons; and all crystalline forms and the pharmaceutically acceptable salts thereof
    Type: Grant
    Filed: September 6, 2000
    Date of Patent: November 6, 2001
    Assignee: American Home Products Corporation
    Inventors: Adam Matthew Gilbert, Zhen-jia Chen
  • Patent number: 6172222
    Abstract: This invention concerns the treatment of smooth muscle spasticity or excess muscle contraction such as urge urinary incontinence with a compound of the formula wherein: R1 and R2 are independently straight chain alkyl of 1 to 6 carbon atoms, branched alkyl of 3 to 6 carbons atoms, or cycloalkyl of 3 to 6 carbons atoms where R1 and R2 may be substituted by F, Cl, Br, I, OH, NH2, cyano, C1-C6 alkoxy, C1-C6alkylthio, COOH or COOC1-C6 alkyl; R3 is an aryl or heteroaryl as defined herein, optionally substituted with 0 to 4 groups selected independently from C1-C6 alkyl, C1-C6 alkoxy, cyano, F, Cl, Br, C1-C6 alkylthio, CO2R1, CONH2, OH, NH2, and NO2; n is 0 or 1; R4 is a straight chain alkyl group of 1 to 10 carbons atoms, a branched alkyl of 3 to 10 carbons, or a cycloalkyl of 3 to 10 carbons; and all crystalline forms and the pharmaceutically acceptable salts thereof.
    Type: Grant
    Filed: June 7, 1999
    Date of Patent: January 9, 2001
    Assignee: American Home Products Corporation
    Inventors: Adam Matthew Gilbert, Zhen-jia Chen
  • Patent number: 6133273
    Abstract: A compound of formula (I) ##STR1## wherein: X=N and Y=CH or X=CH and Y=NR.sub.1 and R.sub.2 are independently, straight chain alkyl of 2 to 12 carbon atoms, branched chain alkyl of 3 to 10 carbon atoms, cycloalkyl of 3 to 10 carbon atoms, aryl of 4 to 10 carbon atoms, 4 to 10 membered heteroaryl or a moiety of the formula (CH.sub.2).sub.m -A wherein m is 1 to 9 and A is cycloalkyl of 3 to 7 carbon atoms; and R.sub.3 is a straight chain alkyl of 1 to 12 carbon atoms, branched chain alkyl of 3 to 10 carbon atoms, aryl of 4 to 10 carbon atoms or 4 to 10 membered heteroaryl for use in the treatment of disorders associated with bone loss by increased transcription and elevation of plasma calcitonin levels.
    Type: Grant
    Filed: May 3, 1999
    Date of Patent: October 17, 2000
    Assignee: American Home Products Corporation
    Inventors: Adam Matthew Gilbert, Zhen-jia Chen, Gerardo De La Cruz Francisco, Magda Asselin