Patents by Inventor Roland P. Bezemer

Roland P. Bezemer 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).

  • Preparation of 3-exomethylenecepham sulfoxides and 2-chlorosulfinylazetidinones using molecular sieves
    Patent number: 5053501
    Abstract: 3-Exomethylenecepham sulfoxide derivatives and intermediates therefor, viz. 2-chlorosulfinylazetidin-4-ones are prepared in high yield and purity by reaction of a penam sulfoxide ester with a N-chloro halogenating agent in the presence of molecular sieves.
    Type: Grant
    Filed: March 21, 1990
    Date of Patent: October 1, 1991
    Assignee: Gist-Brocades N.V.
    Inventors: Jagdfish C. Kapur, Jan J. De Koning, Roland P. Bezemer