Patents by Inventor David B. Ripin

David B. Ripin 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).

  • Processes for the preparation of benzoimidazole derivatives
    Patent number: 7183414
    Abstract: The present invention relates to a process for preparing a compound of the formula I or a pharmaceutically acceptable salt, prodrug, hydrate or solvate thereof, wherein R1, R2, R3 and R4 are as defined herein. The compound of formula I is useful in the treatment of abnormal cell growth, such as cancer, in mammals.
    Type: Grant
    Filed: June 23, 2004
    Date of Patent: February 27, 2007
    Assignee: Pfizer Inc
    Inventors: Norma J. Tom, Michael J. Castaldi, David B. Ripin
  • Heterocyclo-alkylsulfonyl pyrazole derivatives
    Patent number: 6846930
    Abstract: The invention relates to compounds of formula 4: Wherein R1-R4 are defined as in the specification.
    Type: Grant
    Filed: August 25, 2003
    Date of Patent: January 25, 2005
    Assignee: Pfizer Inc.
    Inventors: Dennis E. Bourassa, Michael J. Castaldi, David B. Ripin
  • Process for preparing heterocyclo-alkylsulfonyl pyrazole derivatives
    Publication number: 20040044042
    Abstract: The invention relates to processes for preparing compounds of formula 1: 1
    Type: Application
    Filed: August 25, 2003
    Publication date: March 4, 2004
    Applicant: Pfizer Inc
    Inventors: Dennis E. Bourassa, Michael J. Castaldi, David B. Ripin
  • Process for preparing heterocyclo-alkylsulfonyl pyrazole derivatives
    Patent number: 6646128
    Abstract: The invention relates to processes for preparing compounds of formula 1: as well as intermediates useful in such processes, wherein R1-R4 are as defined herein. The compounds of formula 1 are useful in the treatment or alleviation of inflammation and other inflammation associated disorders.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: November 11, 2003
    Assignee: Pfizer Inc.
    Inventors: Dennis E. Bourassa, Michael J. Castaldi, David B. Ripin
  • Process for preparing heterocyclo-alkysulfonyl pyrazole derivatives
    Publication number: 20030100765
    Abstract: The invention relates to processes for preparing compounds of formula 1: 1
    Type: Application
    Filed: September 27, 2002
    Publication date: May 29, 2003
    Applicant: Pfizer Inc.
    Inventors: Dennis E. Bourassa, Michael J. Castaldi, David B. Ripin