Patents by Inventor Catherine Dunne

Catherine Dunne 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).

  • Process
    Patent number: 7132549
    Abstract: The present invention provides an improved process for the preparation of a polymorph of eletriptan hemisulphate.
    Type: Grant
    Filed: May 24, 2004
    Date of Patent: November 7, 2006
    Assignee: Pfizer Inc.
    Inventors: Julian Aranda-Martinez, Catherine Dunne, Juergen Friedrich Kleinschroth, Julie Ann MacRae, Richard Anthony Storey, Ellen Johanna Weilbacher
  • Process for the preparation of pyrazolopyrimidinones
    Patent number: 7005520
    Abstract: There is provided a process for the production a compound of general formula I: wherein A, R1, R2, R3 and R4 have meanings given in the description, which process comprises the reaction of a compound of formula II, wherein Rx is a group substitutable by an aminopyrazole, with a compound of general formula III
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: February 28, 2006
    Assignee: Pfizer Inc.
    Inventors: Peter James Dunn, Catherine Dunne
  • Process
    Publication number: 20050032872
    Abstract: The present invention provides an improved process for the preparation of a polymorph of eletriptan hemisulphate.
    Type: Application
    Filed: May 24, 2004
    Publication date: February 10, 2005
    Inventors: Julian Aranda-Martinez, Catherine Dunne, Juergen Kleinschroth, Julie MacRae, Richard Storey, Ellen Weilbacher
  • Novel process for the preparation of pyrazolopyrimidinones
    Publication number: 20040106796
    Abstract: There is provided a process for the production a compound of general formula I: 1
    Type: Application
    Filed: November 25, 2003
    Publication date: June 3, 2004
    Applicant: Pfizer Inc
    Inventors: Peter James Dunn, Catherine Dunne
  • Process for the preparation of pyrazolopyrimidinones
    Patent number: 6667398
    Abstract: There is provided a process for the production a compound of general formula I: wherein A, R1, R2, R3 and R4 have meanings given in the description, which process comprises the reaction of a compound of formula II, wherein Rx is a group substitutable by an aminopyrazole, with a compound of general formula III
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: December 23, 2003
    Assignee: Pfizer Inc
    Inventors: Peter James Dunn, Catherine Dunne
  • Novel process for the preparation of pyrazolopyrimidinones
    Publication number: 20020013464
    Abstract: There is provided a process for the production a compound of general formula I: 1
    Type: Application
    Filed: June 21, 2001
    Publication date: January 31, 2002
    Inventors: Peter James Dunn, Catherine Dunne