Patents by Inventor Karen J. Rossiter

Karen J. Rossiter 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).

  • Acylation of tetralins
    Patent number: 5430015
    Abstract: A method of acetylating 1,2,3,4,-tetrahydro-1,1,2,4,4,7-hexamethylnapthalene (HMT) to produce 6-acetyl-1,2,3,4-tetrahydro-1,1,2,4,4,7-hexamethlnaphthalene (acetyl-HMT), comprises subjecting a mixture of 1,2,3,4-tetrahydro-1,1,2,4,4,7-hexamethlnaphthalene and or one or more substituted indanes or substituted acetylindanes to a Friedel-Crafts acetylation reaction in the presence of a saturated hydrocarbon solvent.
    Type: Grant
    Filed: March 16, 1993
    Date of Patent: July 4, 1995
    Assignee: Unilever Patent Holdings, BV
    Inventors: Christopher P. Newman, Karen J. Rossiter, Terence L. Miller
  • Perfumery materials
    Patent number: 5175143
    Abstract: Novel perfumery chemicals having a cyclic acetal structure and providing a variety of perfume notes, especially amber, are described. They are prepared by reacting specified diols and aldehydes/ketones.
    Type: Grant
    Filed: February 10, 1992
    Date of Patent: December 29, 1992
    Assignee: Unilever Patent Holdings B.V.
    Inventors: Christopher P. Newman, Karen J. Rossiter, Charles S. Sell