Patents by Inventor Catherine Geurts

Catherine Geurts 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).

  • Intermediates for 16.beta.-methyl steroids
    Patent number: 6117994
    Abstract: A new process for the preparation of 16.beta.-methyl-steroids of the formula ##STR1## and novel intermediates.
    Type: Grant
    Filed: April 22, 1998
    Date of Patent: September 12, 2000
    Assignee: Hoechst Marion Roussel
    Inventors: Catherine Geurts, Michel Vivat
  • Intermediates for 16.beta.-methyl steroids
    Patent number: 5795982
    Abstract: A compound having a formula selected from ##STR1## wherein A and B are selected from the group consisting of ##STR2## K and K' are selected from the group consisting of ##STR3## n is 2 or 3 and R.sub.1 is an ether or ester residue.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: August 18, 1998
    Assignee: Roussel Uclaf
    Inventors: Catherine Geurts, Michel Vivat
  • Process for the preparation of 16.beta.-methylsteroids
    Patent number: 5596108
    Abstract: A new process for the preparation of 16.beta.-methyl-steroids of the formula ##STR1## and novel intermediates therefor which compounds are intermediates for betamethasone.
    Type: Grant
    Filed: May 18, 1995
    Date of Patent: January 21, 1997
    Assignee: Roussel Uclaf
    Inventors: Catherine Geurts, Michel Vivat