Patents by Inventor Brian Christopher Bishops

Brian Christopher Bishops 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).

  • Chemical synthesis of a chiral 1,4-oxazin-2-one
    Patent number: 6130331
    Abstract: The present invention relates to a process for the preparation of substantially pure N-((S)-(-)-.alpha.-methylbenzyl)-3-(S)-(4-fluorophenyl)-1,4-oxazin-2-one hydrochloride, which comprises selectively crystallising the (S,S)-diastereomer as the hydrochloride salt from a mixture of the (S,R)- and (S,S)-diastereomers in an organic solvent, and collecting the resultant crystalline product.
    Type: Grant
    Filed: September 8, 1999
    Date of Patent: October 10, 2000
    Assignee: Merck Sharp & Dohme Ltd.
    Inventors: Michael Stewart Ashwood, Ian Frank Cottrell, Brian Christopher Bishops, John Simon Edwards