Patents by Inventor Zixia Feng

Zixia Feng 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: 12054488
    Abstract: Provided in the present disclosure is a type of pyrazolopyrimidine compound as shown in formula (I) or a pharmaceutically acceptable salt thereof, and a preparation method thereof and the use of same in the preparation of a drug for treating or preventing cancers. Such a compound is a new-type PI3K inhibitor and has an excellent inhibitory activity, and can hopefully be used for treating a variety of malignant tumors.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: August 6, 2024
    Assignee: SUZHOU RAYMON PHARMACEUTICALS COMPANY, LTD.
    Inventors: Fei Zhang, Zixia Feng
  • Publication number: 20220389017
    Abstract: The present invention disclosures a novel purine derivatives represented by formula (I) or a pharmaceutically acceptable salt thereof, intermediate and application thereof inpreparation of a medicament for treating or preventing a cancer. This compound is a novel PI3K inhibitor with an excellent inhibitory activity; and may be useful for treating a variety of malignant tumors.
    Type: Application
    Filed: October 21, 2020
    Publication date: December 8, 2022
    Inventors: Fei Zhang, Zixia Feng
  • Publication number: 20220106316
    Abstract: Provided in the present disclosure is a type of pyrazolopyrimidine compound as shown in formula (I) or a pharmaceutically acceptable salt thereof, and a preparation method thereof and the use of same in the preparation of a drug for treating or preventing cancers. Such a compound is a new-type PI3K inhibitor and has an excellent inhibitory activity, and can hopefully be used for treating a variety of malignant tumors.
    Type: Application
    Filed: September 25, 2019
    Publication date: April 7, 2022
    Inventors: Fei ZHANG, Zixia FENG
  • Publication number: 20210340146
    Abstract: Provided in the present disclosure is a type of pyrazolopyrimidine compound as shown in formula (I) or a pharmaceutically acceptable salt thereof, and a preparation method thereof and the use of same in the preparation of a drug for treating or preventing cancers. Such a compound is a new-type PI3K inhibitor and has an excellent inhibitory activity, and can hopefully be used for treating a variety of malignant tumors.
    Type: Application
    Filed: September 25, 2019
    Publication date: November 4, 2021
    Inventors: Fei ZHANG, Zixia FENG
  • Patent number: 9695181
    Abstract: The present invention relates to a kind of new hydroximic acid derivatives, in particular, hydroximic acid derivatives of pyrazolopyrimidine and their medical applications, which have inhibition to histone deacetylase 1 and two kinds of tyrosine kinases (vascular endothelial cell growth factor receptors as well as platelet-derived growth factor receptors) simultaneously, and thus can be used for treatment of diseases related to those three kinds of enzymes. This kind of compounds both exerts a synergistic effect sufficiently to increase biological activity, and avoids problems caused by different properties and metabolisms, therefore is more practical and has good prospects.
    Type: Grant
    Filed: August 11, 2014
    Date of Patent: July 4, 2017
    Assignees: DOUBLE RIDER MEDICINE CO., LTD.
    Inventors: Zixia Feng, Zhenghong Cao
  • Publication number: 20160176879
    Abstract: The present invention relates to a kind of new hydroximic acid derivatives, in particular, hydroximic acid derivatives of pyrazolopyrimidine and their medical applications, which have inhibition to histone deacetylase 1 and two kinds of tyrosine kinases (vascular endothelial cell growth factor receptors as well as platelet-derived growth factor receptors) simultaneously, and thus can be used for treatment of diseases related to those three kinds of enzymes. This kind of compounds both exerts a synergistic effect sufficiently to increase biological activity, and avoids problems caused by different properties and metabolisms, therefore is more practical and has good prospects.
    Type: Application
    Filed: August 11, 2014
    Publication date: June 23, 2016
    Inventors: ZIXIA FENG, ZHENGHONG CAO
  • Publication number: 20070293475
    Abstract: Aryl tetrahydrobenzazepine derivatives with minimal 5-HT2B activity relative to 5-HT2A and 5-HT2C activity that are useful for treating glaucoma are disclosed.
    Type: Application
    Filed: June 12, 2007
    Publication date: December 20, 2007
    Applicant: ALCON MANUFACTURING LTD.
    Inventors: Suchismita Mohapatra, Mark R. Hellberg, Zixia Feng
  • Patent number: 7208512
    Abstract: The present invention provides benzodifuran imidazoline derivatives and benzofuran imidazoline derivatives for lowering intraocular pressure and providing ocular neuroprotection.
    Type: Grant
    Filed: December 9, 2002
    Date of Patent: April 24, 2007
    Assignee: Alcon, Inc.
    Inventors: Zixia Feng, Mark R. Hellberg
  • Publication number: 20070072920
    Abstract: Phenylethylamine analogs useful for treating glaucoma are disclosed.
    Type: Application
    Filed: September 22, 2006
    Publication date: March 29, 2007
    Inventors: Mark Hellberg, Abdelmoula Namil, Zixia Feng, Jennifer Ward
  • Publication number: 20060052431
    Abstract: 3-(2-aminoethyl)-1H-indazol-5-ols useful for treating elevated intraocular pressure and glaucoma are disclosed.
    Type: Application
    Filed: November 2, 2005
    Publication date: March 9, 2006
    Inventors: Jesse May, Zixia Feng
  • Patent number: 7005443
    Abstract: 3-(2-aminoethyl)-1H-indazol-5-ols useful for treating elevated intraocular pressure and glaucoma are disclosed.
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: February 28, 2006
    Assignee: Alcon, Inc.
    Inventors: Jesse A. May, Zixia Feng
  • Publication number: 20060009503
    Abstract: The present invention provides benzodifuran imidazoline derivatives and benzofuran imidazoline derivatives for lowering intraocular pressure and providing ocular neuroprotection.
    Type: Application
    Filed: December 9, 2002
    Publication date: January 12, 2006
    Inventors: Zixia Feng, Mark Hellberg
  • Patent number: 6956036
    Abstract: Substituted 1-(?-alkyl-ethylamino)-1H-indazol-6-ols useful for lowering and controlling IOP and treating glaucoma are disclosed
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: October 18, 2005
    Assignee: Alcon, Inc.
    Inventors: Jesse A. May, Zixia Feng, Anura P. Dantanarayana
  • Patent number: 6506802
    Abstract: Novel disulfide derivatives useful for preventing or treating allergic diseases of the eye, nose, skin, ear, gastrointestinal tract, airways or lung and preventing or treating manifestations of systemic mastocytosis are disclosed. The disulfide derivatives act as mast cell stabilizers.
    Type: Grant
    Filed: May 22, 2002
    Date of Patent: January 14, 2003
    Assignee: Alcon Universal Ltd.
    Inventors: Zixia Feng, Mark R. Hellberg, Steven T. Miller
  • Patent number: 6500864
    Abstract: Novel disulfide derivatives useful for preventing or treating allergic diseases of the eye, nose, skin, ear, gastrointestinal tract, airways or lung and preventing or treating manifestations of systemic mastocytosis are disclosed. The disulfide derivatives act as mast cell stabilizers.
    Type: Grant
    Filed: May 22, 2002
    Date of Patent: December 31, 2002
    Assignee: Alcon Universal Ltd.
    Inventors: Zixia Feng, Mark R. Hellberg, Steven T. Miller
  • Publication number: 20020193634
    Abstract: Novel disulfide derivatives useful for preventing or treating allergic diseases of the eye, nose, skin, ear, gastrointestinal tract, airways or lung and preventing or treating manifestations of systemic mastocytosis are disclosed. The disulfide derivatives act as mast cell stabilizers.
    Type: Application
    Filed: May 22, 2002
    Publication date: December 19, 2002
    Inventors: Zixia Feng, Mark R. Hellberg, Steven T. Miller
  • Publication number: 20020193633
    Abstract: Novel disulfide derivatives useful for preventing or treating allergic diseases of the eye, nose, skin, ear, gastrointestinal tract, airways or lung and preventing or treating manifestations of systemic mastocytosis are disclosed. The disulfide derivatives act as mast cell stabilizers.
    Type: Application
    Filed: May 22, 2002
    Publication date: December 19, 2002
    Inventors: Zixia Feng, Mark R. Hellberg, Steven T. Miller
  • Patent number: 6492418
    Abstract: Methods and compositions for preventing or treating allergic diseases of the eye, nose, skin, ear, gastrointestinal tract, airways or lung and preventing or treating manifestations of systemic mastocytosis are disclosed. The compositions contain a mast cell stabilizing disulfide derivative as an active ingredient.
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: December 10, 2002
    Assignee: Alcon Universal Ltd.
    Inventors: Steven T. Miller, Mark R. Hellberg, Zixia Feng
  • Patent number: 6492552
    Abstract: Novel disulfide derivatives useful for preventing or treating allergic diseases of the eye, nose, skin, ear, gastrointestinal tract, airways or lung and preventing or treating manifestations of systemic mastocytosis are disclosed. The disulfide derivatives act as mast cell stabilizers.
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: December 10, 2002
    Assignee: Alcon Universal Ltd.
    Inventors: Zixia Feng, Mark R. Hellberg, Steven T. Miller
  • Patent number: 6452052
    Abstract: Methods and compositions for preventing or treating allergic diseases of the eye, nose, skin, ear, gastrointestinal tract, airways or lung and preventing or treating manifestations of systemic mastocytosis are disclosed. The compositions contain a mast cell stabilizing disulfide derivative as an active ingredient.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: September 17, 2002
    Assignee: Alcon Universal Ltd.
    Inventors: Mark R. Hellberg, Zixia Feng, Steven T. Miller