Patents by Inventor Daniel Y. Du

Daniel Y. Du 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).

  • Androgen modulators
    Patent number: 7670613
    Abstract: The present invention is directed to a new class of 4-cycloalkoxy benzonitriles and to their use as androgen receptor modulators. Other aspects of the invention are directed to the use of these compounds to decrease excess sebum secretions and to stimulate hair growth.
    Type: Grant
    Filed: July 5, 2005
    Date of Patent: March 2, 2010
    Assignee: Pfizer Inc.
    Inventors: Lain-Yen Hu, Bruce A. Lefker, Daniel Y. Du, Yvonne Dorothy Smith, Huangshu Lei, William Glen Harter, Victoria Leigh Downs, Mark L. Boys, Donna Michele Iula
  • ANDROGEN MODULATORS
    Publication number: 20100048517
    Abstract: The present invention is directed to a new class of 4-cycloalkoxy benzonitriles and to their use as androgen receptor modulators. Other aspects of the invention are directed to the use of these compounds to decrease excess sebum secretions and to stimulate hair growth.
    Type: Application
    Filed: November 5, 2009
    Publication date: February 25, 2010
    Inventors: Lain-Yen Hu, Bruce A. Lefker, Daniel Y. Du, Yvonne Dorothy Smith, Huangshu Lei, William Glen Harter, Victoria Leigh Downs, Mark L. Boys, Donna Michele Iula
  • Androgen receptor modulators
    Patent number: 7576128
    Abstract: The present invention is directed to a new class of 4-oxo-benzonitriles, their use as androgen modulators, and to their use in the treatment of alopecia.
    Type: Grant
    Filed: February 8, 2005
    Date of Patent: August 18, 2009
    Assignee: Pfizer Inc.
    Inventors: Lain-Yen Hu, Huangshu Lei, Daniel Y. Du, Bruce A. Lefker
  • ANDROGEN MODULATORS
    Publication number: 20090192202
    Abstract: The present invention is directed to a new class of 4-cyano-phenoxy-alkyl carboxyl derivatives and to their use as androgen receptor modulators. Other aspects of the invention are directed to the use of these compounds to decrease excess sebum secretions and to stimulate hair growth.
    Type: Application
    Filed: February 9, 2009
    Publication date: July 30, 2009
    Inventors: Lain-Yen Hu, Huangshu Lei, Daniel Y. Du, Bruce A. Lefker, Yvonne Dorothy Smith, Victor Fedij
  • Androgen modulators
    Patent number: 7507860
    Abstract: The present invention is directed to a new class of 4-cyano-phenoxy-alkyl carboxyl derivatives and to their use as androgen receptor modulators. Other aspects of the invention are directed to the use of these compounds to decrease excess sebum secretions and to stimulate hair growth.
    Type: Grant
    Filed: April 1, 2005
    Date of Patent: March 24, 2009
    Assignee: Pfizer Inc.
    Inventors: Lain-Yen Hu, Huangshu Lei, Daniel Y. Du, Bruce A. Lefker, Yvonne Dorothy Smith, Victor Fedij
  • Androgen modulators
    Patent number: 7473711
    Abstract: The present invention is directed to a class of 4-cyano-phenoxy derivatives of formula I and to their use as androgen receptor modulators. Other aspects of the invention are directed to the use of these compounds to decrease excess sebum secretions and to stimulate hair growth.
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: January 6, 2009
    Assignee: Pfizer Inc.
    Inventors: Lain-Yen Hu, Huangshu Lei, Daniel Y. Du, Bruce A. Lefker
  • Benzyl urea and thiourea derivatives
    Patent number: 7115745
    Abstract: The present invention is directed to a new class of 6-benzyl urea/thiourea-quinolin-2-one derivatives and 2-oxo-6-benzylurea/thiourea-chromene derivatives. These compound are androgen antagonists and are useful in the treatment of alopecia, acne and other conditions associated with inappropriate activation of the androgen receptor.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: October 3, 2006
    Assignee: Warner Lambert Company LLC
    Inventors: Daniel Y. Du, Martin James Procter, Matthew Colin Thor Fyfe, Vilasben Kanji Shah, Geoffrey Martyn Williams, Karen Lesley Schofield
  • Benzyl sulfonamide derivatives
    Patent number: 7098340
    Abstract: The present invention is directed to a new class of 6-benzylsulfonamido-quinoline/chromene derivatives, to their use as androgen antagonists, and to formulations containing these androgen antagonists.
    Type: Grant
    Filed: April 14, 2004
    Date of Patent: August 29, 2006
    Assignee: Warner Lambert Company LLC
    Inventors: Daniel Y. Du, Martin James Procter, Matthew Colin Thor Fyfe, Vilasben Kanji Shah, Geoffrey Martyn Williams, Karen Lesley Schofield
  • Urea and thiourea derivatives
    Patent number: 7074933
    Abstract: The invention is directed to a new class of quinolin-zene and z-exc chromen compounds that have been derivatized at the 6-position with a urea or this urea moet, and to then use as androgen antagonists.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: July 11, 2006
    Assignee: Warner Lambert Company LLC
    Inventors: Daniel Y. Du, Martin James Procter, Matthew Colin Thor Fyfe, Vilasben Kanji Shah, Geoffrey Martyn Williams, Karen Lesley Schofield
  • Androgen receptor antagonists
    Patent number: 7064207
    Abstract: The present invention is directed to a new class of 6-sulfonamido-quinolin-2-one and 6-sulfonamido-2-oxo-chromene derivatives to their use as androgen antagonists, and to relieve conditions associated with inappropriate activation of the androgen receptor.
    Type: Grant
    Filed: January 15, 2004
    Date of Patent: June 20, 2006
    Assignee: Warner Lambert Company LLC
    Inventors: Daniel Y. Du, Matthew Colin Thor Fyfe, Martin James Procter, Karen Lesley Schofield, Vilasben Kanji Shah, Geoffrey Martyn Williams
  • Androgen receptor antagonists
    Patent number: 7057048
    Abstract: The present invention is directed to a new class of 6-sulfonamido-quinolin-2-one and 6-sulfonamido-2-oxo-chromene derivatives to their use as androgen antagonists, and to relieve conditions associated with inappropriate activation of the androgen receptor.
    Type: Grant
    Filed: January 15, 2004
    Date of Patent: June 6, 2006
    Assignee: Warner Lambert Company LLC
    Inventors: Daniel Y. Du, Matthew Colin Thor Fyfe, Martin James Procter, Karen Lesley Schofield, Vilasben Kanji Shah, Geoffrey Martyn Williams
  • Sulfonamide derivatives
    Patent number: 7009052
    Abstract: The present invention is directed to a new class of 6-sulfonamide quinoline and chromene derivative and to their use as androgen antagonists.
    Type: Grant
    Filed: March 16, 2004
    Date of Patent: March 7, 2006
    Assignee: Warner Lambert Company LLC
    Inventors: Daniel Y. Du, Matthew Colin Thor Fyfe, Martin James Procter, Karen Lesley Schofield, Vilasben Kanji Shah, Geoffrey Martyn Williams
  • Urea and thiourea derivatives
    Publication number: 20040266820
    Abstract: The invention is directed to a new class of quinolin-zene and z-exc chromen compounds that have been derivatized at the 6-position with a urea or this urea moet, and to then use as androgen antagonists.
    Type: Application
    Filed: February 10, 2004
    Publication date: December 30, 2004
    Inventors: Daniel Y. Du, Martin James Procter, Matthew Colin Thor Fyfe, Vilasben Kanji Shah, Geoffrey Martyn Williams, Karen Lesley Schofield