Patents by Inventor Steven Pfeiffer

Steven Pfeiffer 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: 9115100
    Abstract: The invention provides methods and intermediates that are useful for preparing a compound of formula I: and salts thereof.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: August 25, 2015
    Assignee: Gilead Sciences, Inc.
    Inventors: Richard Polniaszek, Steven Pfeiffer, Richard Yu, Aaron Cullen, Eric Dowdy, Duong Tran, Kenneth Kent, Zhongxin Zhou, Doug Cordeau, Leah Easton-Scott
  • Publication number: 20150203525
    Abstract: The invention provides synthetic processes and synthetic intermediates that can be used to prepare compounds having useful anti-HIV properties.
    Type: Application
    Filed: February 5, 2015
    Publication date: July 23, 2015
    Inventors: Richard Hung Chiu YU, Brandon Heath BROWN, Richard P. POLNIASZEK, Benjamin R. GRAETZ, Keiko SUJINO, Duong Duc-Phi TRAN, Alan Scott TRIMAN, Kenneth M. KENT, Steven PFEIFFER
  • Patent number: 8987437
    Abstract: The invention provides synthetic processes and synthetic intermediates that can be used to prepare compounds having useful anti-HIV properties.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: March 24, 2015
    Assignee: Gilead Sciences, Inc.
    Inventors: Richard Hung Chiu Yu, Brandon Heath Brown, Richard P. Polniaszek, Benjamin R. Graetz, Keiko Sujino, Duong Duc-Phi Tran, Alan Scott Triman, Kenneth M. Kent, Steven Pfeiffer
  • Publication number: 20150005493
    Abstract: The invention provides methods and intermediates that are useful for preparing a compound of formula I: and salts thereof.
    Type: Application
    Filed: September 3, 2014
    Publication date: January 1, 2015
    Inventors: Richard POLNIASZEK, Steven PFEIFFER, Richard YU, Aaron CULLEN, Eric DOWDY, Duong TRAN, Kenneth KENT, Zhongxin ZHOU, Doug CORDEAU, Leah EASTON-SCOTT
  • Patent number: 8853210
    Abstract: The invention provides methods and intermediates that are useful for preparing a compound of formula I: and salts thereof.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: October 7, 2014
    Assignee: Gilead Sciences, Inc.
    Inventors: Richard Polniaszek, Steven Pfeiffer, Richard Yu, Aaron Cullen, Eric Dowdy, Duong Tran, Kenneth Kent, Zhongxin Zhou, Doug Cordeau, Leah Easton-Scott
  • Patent number: 8796459
    Abstract: The invention provides synthetic processes and synthetic intermediates that can be used to prepare 4-oxoquinolone compounds having useful integrase inhibiting properties.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: August 5, 2014
    Assignee: Gilead Sciences, Inc.
    Inventors: Eric Dowdy, Xi Chen, Steven Pfeiffer
  • Patent number: 8759525
    Abstract: The invention provides synthetic processes and synthetic intermediates that can be used to prepare 4-oxoquinolone compounds having useful integrase inhibiting properties.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: June 24, 2014
    Assignee: Gilhead Sciences, Inc.
    Inventors: Eric Dowdy, Steven Pfeiffer
  • Publication number: 20140088304
    Abstract: The invention provides methods and intermediates that are useful for preparing a compound of formula I: and salts thereof.
    Type: Application
    Filed: June 24, 2013
    Publication date: March 27, 2014
    Applicant: Gilead Sciences, Inc.
    Inventors: Richard Poliniaszek, Steven Pfeiffer, Richard Yu, Aaron Cullen, Eric Dowdy, Duong Tran, Kenneth Kent, Zhongxin Zhou, Doug Cordeau, Leah Easton
  • Patent number: 8604193
    Abstract: Disclosed is a method for preparing HIV reverse transcriptase inhibitors which inhibit replication of HIV in HIV infected cells, and novel intermediate compounds used therein.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: December 10, 2013
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Stacey Heumann, Christopher M. Levins, Steven Pfeiffer, Donald Tang
  • Publication number: 20130253200
    Abstract: The invention provides synthetic processes and synthetic intermediates that can be used to prepare 4-oxoquinolone compounds having useful integrase inhibiting properties.
    Type: Application
    Filed: April 23, 2013
    Publication date: September 26, 2013
    Applicant: Gilead Sciences, Inc.
    Inventors: Eric Dowdy, Steven Pfeiffer
  • Patent number: 8497396
    Abstract: The invention provides methods and intermediates that are useful for preparing a compound of formula I: and salts thereof.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: July 30, 2013
    Assignee: Gilead Sciences, Inc.
    Inventors: Richard Polniaszek, Steven Pfeiffer, Richard Yu, Aaron Cullen, Eric Dowdy, Duong Tran, Kenneth Kent, Zhongxin Zhou, Doug Cordeau, Leah Easton
  • Patent number: 8440831
    Abstract: The invention provides synthetic processes and synthetic intermediates that can be used to prepare 4-oxoquinolone compounds having useful integrase inhibiting properties.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: May 14, 2013
    Assignee: Gilead Sciences, Inc.
    Inventors: Eric Dowdy, Steven Pfeiffer
  • Publication number: 20130116437
    Abstract: The invention provides synthetic processes and synthetic intermediates that can be used to prepare 4-oxoquinolone compounds having useful integrase inhibiting properties.
    Type: Application
    Filed: September 14, 2012
    Publication date: May 9, 2013
    Applicant: GILEAD SCIENCES, INC.
    Inventors: Eric Dowdy, Xi Chen, Steven Pfeiffer
  • Patent number: 8324244
    Abstract: The invention provides synthetic processes and synthetic intermediates that can be used to prepare 4-oxoquinolone compounds having useful integrase inhibiting properties.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: December 4, 2012
    Assignee: Gilead Sciences, Inc.
    Inventors: Eric Dowdy, Xi Chen, Steven Pfeiffer
  • Publication number: 20120296076
    Abstract: The invention provides synthetic processes and synthetic intermediates that can be used to prepare compounds having useful anti-HIV properties.
    Type: Application
    Filed: May 18, 2012
    Publication date: November 22, 2012
    Inventors: Richard Hung Chiu Yu, Brandon Heath Brown, Richard P. Polniaszek, Benjamin R. Graetz, Keiko Sujino, Duong Duc-Phi Tran, Alan Scott Triman, Kenneth M. Kent, Steven Pfeiffer
  • Publication number: 20120238758
    Abstract: The invention provides synthetic processes and synthetic intermediates that can be used to prepare 4-oxoquinolone compounds having useful integrase inhibiting properties.
    Type: Application
    Filed: March 6, 2012
    Publication date: September 20, 2012
    Applicant: GILEAD SCIENCES, INC.
    Inventors: Eric Dowdy, Steven Pfeiffer
  • Patent number: 8153801
    Abstract: The invention provides synthetic processes and synthetic intermediates that can be used to prepare 4-oxoquinolone compounds having useful integrase inhibiting properties.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: April 10, 2012
    Assignee: Gilead Sciences, Inc.
    Inventors: Eric Dowdy, Steven Pfeiffer
  • Patent number: 8119800
    Abstract: Compounds of Formula (I): can be prepared by a multi-step process from compounds of Formula (II): wherein G is Cl, Br or I.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: February 21, 2012
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Hongyan Guo, Stacey Heumann, Ill Young Lee, Michael L. Mitchell, Steven Pfeiffer, Jong Chan Son
  • Publication number: 20120022257
    Abstract: Disclosed is a method for preparing HIV reverse transcriptase inhibitors which inhibit replication of HIV in HIV infected cells, and novel intermediate compounds used therein.
    Type: Application
    Filed: January 26, 2010
    Publication date: January 26, 2012
    Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Stacey Heumann, Christopher M. Levins, Steven Pfeiffer, Donald Tang
  • Publication number: 20110160458
    Abstract: The invention provides synthetic processes and synthetic intermediates that can be used to prepare 4-oxoquinolone compounds having useful integrase inhibiting properties.
    Type: Application
    Filed: September 28, 2010
    Publication date: June 30, 2011
    Applicant: Gilead Sciences, Inc.
    Inventors: Eric Dowdy, Xi Chen, Steven Pfeiffer