Patents by Inventor Qi Jia

Qi Jia 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: 20110294842
    Abstract: This invention is directed to methods of using spiro-oxindole compounds of formula (I): wherein j, k, m, Q, X, R1, R2a, R2b, R2c, R2d and R3 are as defined herein, as a stereoisomer, enantiomer, tautomer thereof or mixtures thereof; or a pharmaceutically acceptable salt, N-oxide, solvate or prodrug thereof, for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain.
    Type: Application
    Filed: October 12, 2007
    Publication date: December 1, 2011
    Applicant: Xenon Pharmaceuticals Inc.
    Inventors: Jean-Jacques Cadieux, Sultan Chowdhury, Jianmin Fu, Rajender Kamboj, Tom Hsieh, Qi Jia, Shifeng Liu, Jianyu Sun
  • Patent number: 8049016
    Abstract: The present invention provides heterocyclic derivatives that modulate the activity of stearoyl-CoA desaturase. Methods of using such derivatives to modulate the activity of stearoyl-CoA desaturase and pharmaceutical compositions comprising such derivatives are also encompassed.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: November 1, 2011
    Assignees: Novartis AG, Xenon Pharmaceuticals Inc
    Inventors: Sultan Chowdhury, Natalie Dales, Julia Fonarev, Jianmin Fu, Duanjie Hou, Qi Jia, Vishnumurthy Kodumuru, Natalia Pokrovskaia, Shaoyi Sun, Zaihui Zhang
  • Patent number: 8034387
    Abstract: The present invention provides a novel method for preventing and treating memory and cognitive impairment resulting from oxidative stress, inflammation and the process of aging, as well as, neurodegenerative conditions. The method is comprised of administering a composition comprising a mixture of Free-B-Ring flavonoids and flavans synthesized and/or isolated from a single plant or multiple plants to a host in need thereof. The present also includes a novel method for simultaneously inhibiting expression of pro-inflammatory cytokines, preventing ROS generation and augmenting anti-oxidant defenses. The activity of this composition is conducive to ultimately preserving cognitive function and providing a level of neuroprotection.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: October 11, 2011
    Assignee: Unigen, Inc.
    Inventors: Qi Jia, Bruce Burnett, Yuan Zhao
  • Publication number: 20110245333
    Abstract: The present invention provides a novel method for inhibiting the cyclooxygenase enzyme COX-2. The method is comprised of administering a composition containing a Free-B-Ring flavonoid or a composition containing a mixture of Free-B-Ring flavonoids to a host in need thereof. The present also includes novel methods for the prevention and treatment of COX-2 mediated diseases and conditions. The method for preventing and treating COX-2 mediated diseases and conditions is comprised of administering to a host in need thereof an effective amount of a composition containing a Free-B-Ring flavonoid or a composition containing a mixture of Free-B-Ring flavonoids and a pharmaceutically acceptable carrier.
    Type: Application
    Filed: April 11, 2011
    Publication date: October 6, 2011
    Applicant: Unigen, Inc.
    Inventors: Qi Jia, Timothy C. Nichols, Eric E. Rhoden, Scott Walte
  • Publication number: 20110223267
    Abstract: The present invention provides compositions of bakuchiol (UP246) having low levels of impurities, particularly furanocoumarin impurities. The present invention further provides improved methods for the isolation, purification and analysis of compositions of bakuchiol. Finally, the present invention provides methods for using the purified bakuchiol compositions and formulations thereof for the prevention and treatment of various diseases and conditions mediated by cyclooxygenase (COX), lipoxygenase (LOX), minor inflammatory conditions and various microbial infections. The methods of this invention are comprised of administering to a host in need thereof an effective amount of the composition of this invention together with a pharmaceutically acceptable carrier.
    Type: Application
    Filed: March 16, 2011
    Publication date: September 15, 2011
    Applicant: Unigen, Inc.
    Inventors: Qi Jia, Mei-Feng Hong
  • Publication number: 20110207806
    Abstract: The present invention provides a novel composition of matter comprised of a mixture of two specific classes of compounds—Free-B-Ring flavonoids and flavans—for use in the prevention and treatment of diseases and conditions associated with the skin. This composition of matter simultaneously inhibits cyclooxygenase (COX) and lipoxygenase (LOX) enzymatic activity in normal, aged and damaged dermal cells and tissues. This invention further provides a method for the prevention and treatment of diseases and conditions of the skin mediated by cyclooxygenase (COX) and lipoxygenase (LOX).
    Type: Application
    Filed: February 16, 2011
    Publication date: August 25, 2011
    Applicant: Unigen, Inc.
    Inventor: Qi Jia
  • Patent number: 7972632
    Abstract: The present invention provides a novel method for inhibiting the cyclooxygenase enzyme COX-2. The method is comprised of administering a composition containing a Free-B-Ring flavonoid or a composition containing a mixture of Free-B-Ring flavonoids to a host in need thereof. The present also includes novel methods for the prevention and treatment of COX-2 mediated diseases and conditions. The method for preventing and treating COX-2 mediated diseases and conditions is comprised of administering to a host in need thereof an effective amount of a composition containing a Free-B-Ring flavonoid or a composition containing a mixture of Free-B-Ring flavonoids and a pharmaceutically acceptable carrier.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: July 5, 2011
    Assignee: Unigen Pharmaceuticals, Inc.
    Inventor: Qi Jia
  • Publication number: 20110087027
    Abstract: This invention is directed to methods of preparing certain spiro-oxindole derivatives, which are useful for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain.
    Type: Application
    Filed: October 14, 2010
    Publication date: April 14, 2011
    Applicant: XENON PHARMACEUTICALS INC.
    Inventors: Jean-Jacques Cadieux, Mikhail Chafeev, Sultan Chowdhury, Jianmin Fu, Qi Jia, Stefanie Abel, Emad El-Sayed, Elke Huthmann, Thomas Isarno
  • Patent number: 7868135
    Abstract: The present invention provides derivatives of lipopeptide antibiotics that display antimicrobial activity against microorganisms, methods and compounds for synthesizing such antimicrobial derivatives and analogues, and methods of using the compounds in a variety of contexts, including in the treatment and prevention of microbial infections.
    Type: Grant
    Filed: June 28, 2004
    Date of Patent: January 11, 2011
    Assignee: Biowest Therapeutics Inc.
    Inventors: Dale R. Cameron, Vincent A. Boyd, Richard A. Leese, William V. Curran, Donald B. Borders, Paulo W. M. Sgarbi, Shirley A. Wacowich-Sgarbi, Matthew Nodwell, Yuchen Chen, Qi Jia, Dominique Dugourd
  • Publication number: 20100267839
    Abstract: The present invention implements a strategy that combines an enzyme inhibition assay with a chemical dereplication process to identify active plant extracts and the particular compounds—diarylalkanes and/or diarylalkanols within those extracts that specifically inhibit binuclear enzyme function. Included in the present invention are compositions of matter comprised of one or more of diarylalkanes and/or diarylalkanols, which inhibit the activity of binuclear enzymes, particularly tyrosinase and which prevent melanin overproduction. The present invention also provides a method for inhibiting the activity of a binuclear enzyme, particularly tyrosinase and a method for preventing and treating diseases and conditions related to binuclear enzyme function. The present invention further includes a method for preventing and treating melanin overproduction and diseases and conditions of the skin related thereto.
    Type: Application
    Filed: June 11, 2010
    Publication date: October 21, 2010
    Applicant: UNIGEN PHARMACEUTICALS, INC.
    Inventors: Qi Jia, Ji-Fu Zhao
  • Patent number: 7767661
    Abstract: The present invention implements a strategy that combines an enzyme inhibition assay with a chemical dereplication process to identify active plant extracts and the particular compounds—diarylalkanes and/or diarylalkanols within those extracts that specifically inhibit binuclear enzyme function. Included in the present invention are compositions of matter comprised of one or more of diarylalkanes and/or diarylalkanols, which inhibit the activity of binuclear enzymes, particularly tyrosinase and which prevent melanin overproduction. The present invention also provides a method for inhibiting the activity of a binuclear enzyme, particularly tyrosinase and a method for preventing and treating diseases and conditions related to binuclear enzyme function. The present invention further includes a method for preventing and treating melanin overproduction and diseases and conditions of the skin related thereto.
    Type: Grant
    Filed: February 6, 2008
    Date of Patent: August 3, 2010
    Assignee: Unigen Pharmaceuticals, Inc.
    Inventors: Qi Jia, Ji-Fu Zhao
  • Publication number: 20100168223
    Abstract: The present invention describes the identification and purification of 7-hydroxychromes that exhibit potent antioxidant activity. In one embodiment the present invention includes a method for providing an antioxidant to a host in need thereof, comprising administering an effective amount of a 7-hydroxychrome or a mixture of 7-hydroxychromones. The present invention includes methods that are effective in inhibiting free radical and oxidation caused damage through the simultaneous suppression of free radical generation and the suppression of the production of reactive oxygen species (ROS). The present invention also includes methods for preventing and treating ROS mediated diseases and conditions and diseases and conditions associated with other oxidative processes.
    Type: Application
    Filed: March 10, 2010
    Publication date: July 1, 2010
    Applicant: UNIGEN PHARMACEUTICALS, INC.
    Inventors: Qi Jia, Thomas M. Farrow
  • Publication number: 20100160362
    Abstract: This invention is directed to methods of using spiro-oxindole compounds of formula (I): wherein j, k, m, Q, X, R1, R2a, R2b, R2c, R2d and R3 are as defined herein, as a stereoisomer, enantiomer, tautomer thereof or mixtures thereof; or a pharmaceutically acceptable salt, N-oxide, solvate or prodrug thereof, for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain.
    Type: Application
    Filed: October 12, 2007
    Publication date: June 24, 2010
    Applicant: Xenon Pharmaceuticals Inc.
    Inventors: Jean-Jacques Cadieux, Sultan Chowdhury, Jianmin Fu, Rajender Kamboj, Tom Hsieh, Qi Jia, Shifeng Liu, Jianyu Sun
  • Publication number: 20100137299
    Abstract: This invention is directed to spiro-oxindole compounds, as stereoisomers, enantiomers, tautomers thereof or mixtures thereof; or pharmaceutically acceptable salts, solvates or prodrugs thereof, for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain.
    Type: Application
    Filed: October 13, 2009
    Publication date: June 3, 2010
    Applicant: XENON PHARMACEUTICALS INC.
    Inventors: Mikhail Chafeev, Sultan Chowdhury, Lauren Fraser, Jianmin Fu, Jonathan Langille, Shifeng Liu, Jianyu Sun, Shaoyi Sun, Serguei Sviridov, Mark Wood, Alla Zenova, Qi Jia, Jean-Jacques Cadieux, Simon J. Gauthier, Amy Frances Douglas, Tom Hsieh, Nagasree Chakka, Zoran Cikojevic
  • Patent number: 7695743
    Abstract: The present invention provides a novel method for preventing and treating memory and cognitive impairment resulting from oxidative stress, inflammation and the process of aging, as well as, neurodegenerative conditions. The method is comprised of administering a composition comprising a mixture of Free-B-Ring flavonoids and flavans synthesized and/or isolated from a single plant or multiple plants to a host in need thereof. The present also includes a novel method for simultaneously inhibiting expression of pro-inflammatory cytokines, preventing ROS generation and augmenting anti-oxidant defenses. The activity of this composition is conducive to ultimately preserving cognitive function and providing a level of neuroprotection.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: April 13, 2010
    Assignee: Unigen Pharmaceuticals, Inc.
    Inventors: Qi Jia, Bruce Burnett, Yuan Zhao
  • Patent number: 7678772
    Abstract: The present invention describes the identification and purification of 7-hydroxychromes that exhibit potent antioxidant activity. In one embodiment the present invention includes a method for providing an antioxidant to a host in need thereof, comprising administering an effective amount of a 7-hydroxychrome or a mixture of 7-hydroxychromones. The present invention includes methods that are effective in inhibiting free radical and oxidation caused damage through the simultaneous suppression of free radical generation and the suppression of the production of reactive oxygen species (ROS). The present invention also includes methods for preventing and treating ROS mediated diseases and conditions and diseases and conditions associated with other oxidative processes.
    Type: Grant
    Filed: March 21, 2005
    Date of Patent: March 16, 2010
    Assignee: Unigen Pharmaceuticals, Inc.
    Inventors: Qi Jia, Thomas M. Farrow
  • Patent number: 7674830
    Abstract: The present invention provides a novel composition of matter comprised of a mixture of two specific classes of compounds—Free-B-ring flavonoids and flavans—for use in the prevention and treatment of diseases and conditions mediated by the COX-2 and 5-LO pathways. The present invention further provides a novel method for simultaneously inhibiting the cyclooxygenase-2 (COX-2) and 5-lipoxygenase (5-LO) enzymes, and reducing cox-2 mRNA production. Finally, the present invention includes a method for weight loss and blood glucose control. The methods of this invention are comprised of administering to a host in need thereof an effective amount of the composition of this invention together with a pharmaceutically acceptable carrier.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: March 9, 2010
    Assignee: Unigen Pharmaceuticals, Inc.
    Inventor: Qi Jia
  • Publication number: 20090264444
    Abstract: The present invention provides heterocyclic derivatives that modulate the activity of stearoyl-CoA desaturase. Methods of using such derivatives to modulate the activity of stearoyl-CoA desaturase and pharmaceutical compositions comprising such derivatives are also encompassed.
    Type: Application
    Filed: February 20, 2009
    Publication date: October 22, 2009
    Inventors: Sultan Chowdhury, Natalie Dales, Julia Fonarev, Jianmin Fu, Duanjie Hou, Qi Jia, Vishnumurthy Kodumuru, Natalia Pokrovskaia, Shaoyi Sun, Zaihui Zhang
  • Patent number: 7531521
    Abstract: The present invention provides a novel method for inhibiting sugar-induced weight gain resulting from fructose and glucose driven lipogenesis. The method for inhibiting sugar-induced weight gain is comprised of administering a composition comprising a mixture of Free-B-Ring flavonoids and flavans synthesized and/or isolated from a single plant or multiple plants, preferably in the Scutellaria and Acacia genus of plants to a host in need thereof. The present also includes novel methods for the prevention and treatment of diseases and conditions resulting from high carbohydrate ingestion. The method for preventing and treating these sugar-induced diseases and conditions is comprised of administering to a host in need thereof a therapeutically effective amount of a composition comprising a mixture of Free-B-Ring flavonoids and flavans synthesized and/or isolated from a single plant or multiple plants, preferably in the Scutellaria and Acacia genus of plants and a pharmaceutically acceptable carrier.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: May 12, 2009
    Assignee: Unigen Pharmaceuticals, Inc.
    Inventors: Bruce P. Burnett, Qi Jia
  • Patent number: 7514469
    Abstract: The present invention provides a novel composition of matter comprised of a mixture of two specific classes of compounds—Free-B-ring flavonoids and flavans—for use in the prevention and treatment of diseases and conditions mediated by the COX-2 and 5-LO pathways. The present invention further provides a novel method for simultaneously inhibiting the cyclooxygenase-2 (COX-2) and 5-lipoxygenase (5-LO) enzymes, and reducing cox-2 mRNA production. Finally, the present invention includes a method for weight loss and blood glucose control. The methods of this invention are comprised of administering to a host in need thereof an effective amount of the composition of this invention together with a pharmaceutically acceptable carrier.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: April 7, 2009
    Assignee: Unigen Pharmaceuticals, Inc.
    Inventor: Qi Jia