Patents by Inventor Carlos B. Zetina-Rocha

Carlos B. Zetina-Rocha 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).

  • Amorphous form of an L-arginine salt of perindopril and processes for preparation thereof
    Patent number: 8101646
    Abstract: In illustrative embodiments, there is provided an amorphous form of L-arginine salt of perindopril which may be particularly suitable for pharmaceutical applications, and processes for preparing said form.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: January 24, 2012
    Assignee: Apotex Pharmachem Inc.
    Inventors: Gamini Weeratunga, Carlos B. Zetina-Rocha
  • AMORPHOUS FORM OF AN L-ARGININE SALT OF PERINDOPRIL AND PROCESSES FOR PREPARATION THEREOF
    Publication number: 20100056802
    Abstract: In illustrative embodiments, there is provided an amorphous form of L-arginine salt of perindopril which may be particularly suitable for pharmaceutical applications, and processes for preparing said form.
    Type: Application
    Filed: September 3, 2009
    Publication date: March 4, 2010
    Applicant: Apotex Pharmachem Inc.
    Inventors: Gamini WEERATUNGA, Carlos B. Zetina-Rocha
  • Preparation of derivative of 3-sulfonamido-4-phenylaminopyridine
    Patent number: 6593475
    Abstract: This invention relates to the preparation of 3-sulfonamido-4-arylaminopyridines by heating a 3-sulfonamido-4-aminopyridine with an aryl halide in the presence of an alkaline compound, a copper-containing agent and in the presence of a polar protic solvent.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: July 15, 2003
    Assignee: Brantford Chemicals Inc.
    Inventors: Carlos B. Zetina-Rocha, Bhaskar Reddy Guntoori, Stephen E. Horne