Patents by Inventor Louise M. L. Lawter

Louise M. L. Lawter 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).

  • Pineapple ketone carbonate derivatives
    Patent number: 4937229
    Abstract: A compound of the general formula, ##STR1## wherein R.sub.1 and R.sub.2 independently are --H, --CH.sub.3, or --CH.sub.2 CH.sub.3 ; and R.sub.3 is alkyl of from 1 to 10 carbons or aryl of from 6 to 10 carbons.
    Type: Grant
    Filed: June 26, 1989
    Date of Patent: June 26, 1990
    Assignee: Hercules Incorporated
    Inventors: Brian Byrne, Louise M. L. Lawter
  • Pineapple ketone carbonate derivatives
    Patent number: 4880641
    Abstract: A compound of the general formula, ##STR1## wherein R.sub.1 and R.sub.2 independently are --H, --CH.sub.3, or --CH.sub.2 CH.sub.3 ; and R.sub.3 is alkyl of from 1 to 10 carbons or aryl of from 6 to 10 carbons.
    Type: Grant
    Filed: May 6, 1988
    Date of Patent: November 14, 1989
    Assignee: Hercules Incorporated
    Inventors: Brian Byrne, Louise M. L. Lawter
  • Pineapple ketone carbonate derivatives
    Patent number: 4758680
    Abstract: A compound of the general formula, ##STR1## wherein R.sub.1 and R.sub.2 independently are --H, --CH.sub.3, or --CH.sub.2 CH.sub.3 ; and R.sub.3 is alkyl of from 1 to 10 carbons or aryl of from 6 to 10 carbons.
    Type: Grant
    Filed: November 9, 1987
    Date of Patent: July 19, 1988
    Assignee: Hercules Incorporated
    Inventors: Brian Byrne, Louise M. L. Lawter
  • Pineapple ketone 1'-alkoxyalkyl derivatives
    Patent number: 4590284
    Abstract: A compound of the general formula, ##STR1## wherein R.sub.1 and R.sub.2 independently are --H, --CH.sub.3, or --CH.sub.2 CH.sub.3 ; and R.sub.3 and R.sub.4 are independently alkyl or alkenyl of from 1 to 10 carbons, or aryl of from 6 to 10 carbons, or R.sub.4 =hydrogen.
    Type: Grant
    Filed: April 29, 1985
    Date of Patent: May 20, 1986
    Assignee: Hercules Incorporated
    Inventors: Brian Byrne, Louise M. L. Lawter