Patents by Inventor Luc Devocelle

Luc Devocelle 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).

  • Lambda-1,4-pregnadiene-3,20-diones
    Patent number: 5451690
    Abstract: A compound of the formula ##STR1## wherein R is selected from the group consisting of hydrogen, acyl of an organic carboxylic acid of 1 to 8 carbon atoms, allyloxycarbonyl, alkoxycarbonyl and aralkoxycarbonyl of up to 8 carbon atoms and alkylsulfonyl and arylsulfonyl of up to 8 carbon atoms and their use to prepare substituted 16,17-methylenedioxy-steroids and novel intermediates.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: September 19, 1995
    Assignee: Roussel Uclaf
    Inventors: Luc Devocelle, Philippe Mackiewicz
  • .delta..sup.1,4 -pregnadiene-3,20-diones
    Patent number: 5434258
    Abstract: A compound of the formula ##STR1## wherein R is selected from the group consisting of hydrogen, acyl of an organic carboxylic acid of 1 to 8 carbon atoms, allyloxycarbonyl, alkoxycarbonyl and aralkoxycarbonyl of up to 8 carbon atoms and alkylsulfonyl and arylsulfonyl of up to 8 carbon atoms and their use to prepare substituted 16,17-methylenedioxy-steroids and novel intermediates.
    Type: Grant
    Filed: February 2, 1994
    Date of Patent: July 18, 1995
    Assignee: Roussel Uclaf
    Inventors: Luc Devocelle, Philippe Mackiewicz
  • Process for preparing .DELTA..sup.1,4 -pregnadiene-3,20-diones
    Patent number: 5310896
    Abstract: A compound of the formula ##STR1## wherein R is selected from the group consisting of hydrogen, acyl of an organic carboxylic acid of 1 to 8 carbon atoms, allyloxycarbonyl, alkoxycarbonyl and aralkoxycarbonyl of up to 8 carbon atoms and alkylsulfonyl and arylsulfonyl of up to 8 carbon atoms and their use to prepare substituted 16,17-methylenedioxysteroids and novel intermediates.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: May 10, 1994
    Assignee: Roussel UCLAF
    Inventors: Luc Devocelle, Philippe Mackiewicz