Patents by Inventor Hengqin Cheng

Hengqin Cheng 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).

  • STABLE SNS-595 COMPOSITIONS AND METHODS OF PREPARATION
    Publication number: 20190084978
    Abstract: Methods of preparing substantially pure SNS-595 substance are disclosed. Also provided are compositions comprising SNS-595 substance that are substantially pure and essentially free of visible particles.
    Type: Application
    Filed: April 11, 2018
    Publication date: March 21, 2019
    Inventors: Anantha Sudhakar, Jeff Jacobs, Ahmad Hashash, Sean Ritchie, Hengqin Cheng
  • Stable SNS-595 compositions and methods of preparation
    Patent number: 9969730
    Abstract: Methods of preparing substantially pure SNS-595 substance are disclosed. Also provided are compositions comprising SNS-595 substance that are substantially pure and essentially free of visible particles.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: May 15, 2018
    Assignee: Sunesis Pharmaceuticals, Inc.
    Inventors: Anantha Sudhakar, Jeff Jacobs, Ahmad Hashash, Sean Ritchie, Hengqin Cheng
  • STABLE SNS-595 COMPOSITIONS AND METHODS OF PREPARATION
    Publication number: 20170226104
    Abstract: Methods of preparing substantially pure SNS-595 substance are disclosed. Also provided are compositions comprising SNS-595 substance that are substantially pure and essentially free of visible particles.
    Type: Application
    Filed: September 16, 2016
    Publication date: August 10, 2017
    Inventors: Anantha Sudhakar, Jeff Jacobs, Ahmad Hashash, Sean Ritchie, Hengqin Cheng
  • Stable SNS-595 compositions and methods of preparation
    Patent number: 9469635
    Abstract: Methods of preparing substantially pure SNS-595 substance are disclosed. Also provided are compositions comprising SNS-595 substance that are substantially pure and essentially free of visible particles.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: October 18, 2016
    Assignee: Sunesis Pharmaceuticals, Inc.
    Inventors: Anantha Sudhakar, Jeff Jacobs, Ahmad Hashash, Sean Ritchie, Hengqin Cheng
  • Stable SNS-595 compositions and methods of preparation
    Patent number: 8586601
    Abstract: Methods of preparing substantially pure SNS-595 substance are disclosed. Also provided are compositions comprising SNS-595 substance that are substantially pure and essentially free of visible particles.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: November 19, 2013
    Assignee: Sunesis Pharmaceuticals, Inc.
    Inventors: Anantha Sudhakar, Jeff Jacobs, Ahmad Hashash, Sean Ritchie, Hengqin Cheng
  • Stable SNS-595 compositions and methods of preparation
    Patent number: 8138202
    Abstract: Methods of preparing substantially pure SNS-595 substance are disclosed. Also provided are compositions comprising SNS-595 substance that are substantially pure and essentially free of visible particles.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: March 20, 2012
    Assignee: Sunesis Pharmaceuticals, Inc.
    Inventors: Anantha Sudhakar, Jeff Jacobs, Ahmad Hashash, Sean Ritchie, Hengqin Cheng
  • STABLE SNS-595 COMPOSITIONS AND METHODS OF PREPARATION
    Publication number: 20110086876
    Abstract: Methods of preparing substantially pure SNS-595 substance are disclosed. Also provided are compositions comprising SNS-595 substance that are substantially pure and essentially free of visible particles.
    Type: Application
    Filed: December 30, 2010
    Publication date: April 14, 2011
    Inventors: Anantha Sudhakar, Jeff Jacobs, Ahmad Hashash, Sean Ritchie, Hengqin Cheng
  • Stable SNS-595 Compositions and Methods of Preparation
    Publication number: 20110082169
    Abstract: Methods of preparing substantially pure SNS-595 substance are disclosed. Also provided are compositions comprising SNS-595 substance that are substantially pure and essentially free of visible particles.
    Type: Application
    Filed: September 3, 2010
    Publication date: April 7, 2011
    Inventors: Anantha SUDHAKAR, Jeff Jacobs, Ahmad Hashasb, Sean Ritchie, Hengqin Cheng