Patents by Inventor Audrey J. Bownass

Audrey J. Bownass 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).

  • Process for the separation of a mixture of "syn" and "anti" oxime isomers
    Patent number: 4876351
    Abstract: A process for the separation of a mixture of syn and anti oxime isomers one from the other which comprises adsorbing said mixed oxime isomers onto a non-functional macroreticular adsorption resin, and eluting said resin to yield at least one eluate fraction containing one of said isomers while being substantially free of the other of said isomers.The application of this process to the separation of syn and anti isomers of cephalosporin compounds possessing an oxime grouping in a side-chain in the 7.beta.-position, and of acids corresponding to this 7.beta.-side chain, is described.
    Type: Grant
    Filed: October 30, 1987
    Date of Patent: October 24, 1989
    Assignee: Glaxo Group Limited
    Inventors: Colin Robinson, David T. Eastlick, Audrey J. Bownass
  • Process for separation of syn and anti oxime isomers of cephalosporin-compounds
    Patent number: 4717768
    Abstract: A process for the separation of a mixture of syn and anti oxime isomers one from the other which comprises adsorbing said mixed oxime isomers onto a non-functional macroreticular adsorption resin, and eluting said resin to yield at least one eluate fraction containing one of said isomers while being substantially free of the other of said isomers.The application of this process to the separation of syn and anti isomers of cephalosporin compounds possessing an oxime grouping in a side-chain in the 7.beta.-position, and of acids corresponding to this 7.beta.-side chain, is described.
    Type: Grant
    Filed: September 7, 1984
    Date of Patent: January 5, 1988
    Assignee: Glaxo Group Limited
    Inventors: Colin Robinson, David T. Eastlick, Audrey J. Bownass