Patents by Inventor Yongfeng Wang

Yongfeng 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: 20100204223
    Abstract: The invention relates to the compounds of formula I, their preparation and the pharmaceutical compositions containing the compounds. The invention also relates to the use of the compounds of formula I in preparing medicines, which can treat sexual dysfunction of animals including human (male and female), especially erectile dysfunction of male and the diseases in which the function of phospholipase 5 (cGMP PDE5) is involved.
    Type: Application
    Filed: January 11, 2010
    Publication date: August 12, 2010
    Applicants: YANGTZE RIVER PHARMACEUTICAL (GROUP) CO., LTD., TIANJIN NORTH PHARMA SCI-TECH CO., LTD.
    Inventors: Yongfeng Wang, Kejun Zhao
  • Patent number: 7745433
    Abstract: The invention relates to the compounds of formula I, their preparation and the pharmaceutical compositions containing the compounds. The invention also relates to the use of the compounds of formula I in preparing medicines, which can treat sexual dysfunction of animals including human (male and female), especially erectile dysfunction of male and the diseases in which the function of phospholipase 5 (cGMP PDE5) is involved.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: June 29, 2010
    Assignees: Yangtze River Pharmacuetical (Group) Co., Ltd., Tianjin North Pharma Sci-Tech Co., Ltd.
    Inventors: Yongfeng Wang, Kejun Zhao
  • Patent number: 7741483
    Abstract: The invention relates to the compounds of formula I, their preparation and the pharmaceutical compositions containing the compounds. The invention also relates to the use of the compounds of formula I in preparing medicines, which can treat sexual dysfunction of animals including human (male and female), especially erectile dysfunction of male and the diseases in which the function of phospholipase 5 (cGMP PDE5) is involved.
    Type: Grant
    Filed: March 6, 2008
    Date of Patent: June 22, 2010
    Assignees: Yangtze River Pharmaceutical (Group) Co., Ltd., Tianjin North Pharma Sci-Tech Co., Ltd.
    Inventors: Yongfeng Wang, Kejun Zhao
  • Publication number: 20090271653
    Abstract: A data synchronization system and method. The method includes that when a change happens in a source application, data is collected from a source application based on a target application subscribing the source application and collection data is transmitted to the target application or is directly inserted to target database. The system includes data collection unit and distribution unit. The present invention may realize synchronization on demand, simultaneously reduce greatly synchronous data quantity, decrease network load, and guarantee smoothness and stabilization of network. The present invention applies to data synchronization of enterprise internal/external data systems, telecommunication networks, etc.
    Type: Application
    Filed: October 10, 2008
    Publication date: October 29, 2009
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Zhongchu ZHU, Yongfeng WANG, Fei ZHOU, Mingzhu SHI, Wei HE, Yunlong WANG
  • Patent number: 7579336
    Abstract: The present invention discloses general formula I of Temozolomide-8-carboxylate compounds, the process for preparation, pharmaceutical compositions comprising the compounds and the use of the compounds and pharmaceutical compositions for the manufacture of an antitumor medicament. The said pharmaceutical composition comprises one or more general formula I Temozolomide-8-carboxylate compounds as active ingredient, together with conventional pharmaceutical carriers. The composition also comprises one or more pharmaceutically acceptable acidic material, optionally second or tertiary alcohol or ester or ether derivatives thereof. The said pharmaceutical composition can be made into various common formulations, particularly oral formulations as well as topically transdermal patches. The present invention also discloses the application of the compounds and the compositions to treat tumor.
    Type: Grant
    Filed: September 15, 2005
    Date of Patent: August 25, 2009
    Assignee: Tian Jin Tasly Group Co., Ltd.
    Inventor: Yongfeng Wang
  • Publication number: 20080167462
    Abstract: The invention relates to the compounds of formula I, their preparation and the pharmaceutical compositions containing the compounds. The invention also relates to the use of the compounds of formula I in preparing medicines, which can treat sexual dysfunction of animals including human (male and female), especially erectile dysfunction of male and the diseases in which the function of phospholipase 5 (cGMP PDE5) is involved.
    Type: Application
    Filed: March 6, 2008
    Publication date: July 10, 2008
    Applicant: TIANJIN TASLY GROUP CO., LTD
    Inventors: Yongfeng Wang, Kejun Zhao
  • Publication number: 20080044457
    Abstract: The present invention discloses general formula I of Temozolomide-8-carboxylate compounds, the process for preparation, pharmaceutical compositions comprising the compounds and the use of the compounds and pharmaceutical compositions for the manufacture of an antitumor medicament. The said pharmaceutical composition comprises one or more general formula I Temozolomide-8-carboxylate compounds as active ingredient, together with conventional pharmaceutical carriers. The composition also comprises one or more pharmaceutically acceptable acidic material, optionally second or tertiary alcohol or ester or ether derivatives thereof. The said pharmaceutical composition can be made into various common formulations, particularly oral formulations as well as topically transdermal patches. The present invention also discloses the application of the compounds and the compositions to treat tumor.
    Type: Application
    Filed: September 15, 2005
    Publication date: February 21, 2008
    Applicant: TIAN JIN KINSLY PHARMACEUTICAL R&D CO. LTD.
    Inventor: Yongfeng Wang
  • Patent number: 7173021
    Abstract: This invention relates to the use of temozolomide esters (4-dihydro-3-methyl-4-oxoimidazo[5,1-d]-1,2,3,5-tetrazine-8-carboxylate esters) Formula 1 as potent anticancer pro-drugs for treatment of cancers by topical and transdermal applications, and to a novel process for synthesis of temozolomide esters by a direct esterification of temozolomide acid (3,4-dihydro-3-methyl-4-oxoimidazo[5,1-d]-1,2,3,5-tetrazine-8-carboxylic acid) with a halogeno-aliphatic compound in presence of a base, or with an alcohol in presence of a dehydrate agent
    Type: Grant
    Filed: March 7, 2005
    Date of Patent: February 6, 2007
    Assignee: Tianjin North Pharm Sci-Tech Co., Ltd.
    Inventors: Yongfeng Wang, Barbara R. Conway, Panassaya Suppasansatorn
  • Publication number: 20060173025
    Abstract: The invention relates to the compounds of formula I, their preparation and the pharmaceutical compositions containing the compounds. The invention also relates to the use of the compounds of formula I in preparing medicines, which can treat sexual dysfunction of animals including human (male and female), especially erectile dysfunction of male and the diseases in which the function of phospholipase 5 (cGMP PDE5) is involved.
    Type: Application
    Filed: May 14, 2004
    Publication date: August 3, 2006
    Inventors: Yongfeng Wang, Kejun Zhao
  • Publication number: 20060047117
    Abstract: This invention relates to the use of temozolomide esters (4-dihydro-3-methyl-4-oxoimidazo[5,1-d]-1,2,3,5-tetrazine-8-carboxylate esters) Formula 1 as potent anticancer pro-drugs for treatment of cancers by topical and transdermal applications, and to a novel process for synthesis of temozolomide esters by a direct esterification of temozolomide acid (3,4-dihydro-3-methyl-4-oxoimidazo[5,1-d]-1,2,3,5-tetrazine-8-carboxylic acid) with a halogeno-aliphatic compound in presence of a base, or with an alcohol in presence of a dehydrate agent.
    Type: Application
    Filed: March 7, 2005
    Publication date: March 2, 2006
    Inventors: Yongfeng Wang, Barbara Conway, Panassaya Suppasansatorn
  • Publication number: 20050244494
    Abstract: The present invention relates to a controlled release system, in particular to a controlled release system containing temozolomide.
    Type: Application
    Filed: September 29, 2003
    Publication date: November 3, 2005
    Inventors: Yongfeng Wang, Dan Fei
  • Patent number: 6933650
    Abstract: The present invention relates to a wear indicator for a motor carbon brush which includes a housing, carbon brushes, an elastic element, a circuit board with an alarm indicator light and an electric probe disposed on the circuit board. The electric probe is connected to the alarm indicator light and the carbon brush has a contact portion on its outer surface which when the brush is worn and need to be changed is electrically connected to the alarm indicator light through the electrical probe to turn the alarm indicator light on. The present invention is simple to manufacture and gives a indication of wear.
    Type: Grant
    Filed: January 9, 2004
    Date of Patent: August 23, 2005
    Assignee: Positec Power Tools (Suzhou) Co., Ltd.
    Inventor: Yongfeng Wang
  • Publication number: 20040155553
    Abstract: The present invention relates to a wear indicator for a motor carbon brush which includes a housing, carbon brushes, an elastic element, a circuit board with an alarm indicator light and an electric probe disposed on the circuit board. The electric probe is connected to the alarm indicator light and the carbon brush has a contact portion on its outer surface which when the brush is worn and need to be changed is electrically connected to the alarm indicator light through the electrical probe to turn the alarm indicator light on. The present invention is simple to manufacture and gives a indication of wear.
    Type: Application
    Filed: January 9, 2004
    Publication date: August 12, 2004
    Applicant: Positec Power Tools
    Inventor: Yongfeng Wang