Patents by Inventor Stephen W. Elson

Stephen W. Elson 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).

  • Clavam derivatives and its enzymatic preparation
    Patent number: 5130241
    Abstract: A compound having the formula (I): ##STR1## is described, together with salts thereof and an enzymatic process for converting such compounds into clavulanic acid.A process for the preparation of the compound of formula (I) and its salts is disclosed, together with intermediates for use therein. This process involves the use of a novel enzyme system to effect the desired cyclisation, which enzyme system is preferably derived from a micro-organism, in particular a species of Streptomyces.
    Type: Grant
    Filed: December 26, 1990
    Date of Patent: July 14, 1992
    Assignee: Beecham Group plc
    Inventors: Stefan R. Woroniecki, Stephen W. Elson, Keith H. Baggaley
  • Novel clavam derivatives and methods of making same
    Patent number: 4795809
    Abstract: A compound having the formula (I): ##STR1## is described, together with salts thereof and an enzymatic process for converting such compounds into clavulanic acid.A process for the preparation of the compound of formula (I) and its salts is disclosed, together with intermediates for use therein. This process involves the use of a novel enzyme system to effect the desired cyclization, which enzyme system is preferably derived from a micro-organism, in particular a species of Streptomyces.
    Type: Grant
    Filed: August 27, 1986
    Date of Patent: January 3, 1989
    Assignee: Beecham Group plc
    Inventors: Stefan R. Woroniecki, Stephen W. Elson, Keith H. Baggaley