Patents by Inventor Robert M. Tait

Robert M. Tait 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).

  • Cyclic ketal derivatives
    Patent number: 5409950
    Abstract: Compounds are described of the formula ##STR1## wherein R.sub.1 represents a hydrogen atom, a hydroxyl group or a group selected from --OCOCH.dbd.CHCH(CH.sub.3)(CH.sub.2).sub.3 CH.sub.3, --OCOCH.dbd.CHC(CH.sub.3).dbd.CHCH(CH.sub.3)--CH.sub.2 CH.sub.3, or --OCO--X--CH.sub.2 CH(CH.sub.3)CH.sub.2 CH.sub.3 [where X is --CH.dbd.CHCH(CH.sub.3)--, --CH.sub.2 CH(OH)CH(CH.sub.3)--, --CH.dbd.CHC(OH)(CH.sub.3)--, --CH.sub.2 CH(OH)CH.sub.2 -- or --CH.sub.2 CH.sub.2 CH(CH.sub.3)--)];R.sub.2 represents a hydrogen atom or a hydroxyl group;R.sub.3 represents a group selected from --C(.dbd.CH.sub.2)CH(OR.sub.7)CH(CH.sub.3)CH.sub.2 Ph (where R.sub.7 is a hydrogen atom or an acetyl group), --C(CH.sub.3).dbd.CHCH(CH.sub.2 R.sub.8)CH.sub.2 Ph (where R.sub.8 is a hydrogen or a hydroxyl group), --C(CH.sub.2 OH).dbd.CHCH(CH.sub.3)CH.sub.2 Ph, --C(.dbd.CH.sub.2)CH(OH)CH(CH.sub.2 OH)CH.sub.2 Ph, --C(.dbd.CH.sub.2)CH(NHCOCH.sub.3)CH(CH.sub.3)CH.sub.2 Ph, --C(CH.sub.2 NHCOCH.sub.3).dbd.CHCH(CH.sub.3)CH.sub.2 Ph or ##STR2## R.sub.4, R.
    Type: Grant
    Filed: October 26, 1993
    Date of Patent: April 25, 1995
    Assignee: Glaxo Group Limited
    Inventors: Michael J. Dawson, Allan Baxter, Robert M. Tait, Nigel S. Watson, David Noble, Alan Shuttleworth, Howard G. Wildman, Michael V. Hayes
  • Cyclic ketal derivatives
    Patent number: 5278067
    Abstract: The invention is directed to a biologically pure culture of the microorganism Phoma sp. IMI 332962 or a mutant thereof.
    Type: Grant
    Filed: January 8, 1992
    Date of Patent: January 11, 1994
    Assignee: Glaxo Group Limited
    Inventors: Michael J. Dawson, Allan Baxter, Robert M. Tait, Nigel S. Watson, David Noble, Alan Shuttleworth, Howard G. Wildman, Michael V. Hayes