Patents by Inventor Trefor Evans

Trefor Evans 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).

  • Hair conditioning compositions comprising one or more dibasic amino acids
    Patent number: 6432394
    Abstract: The present invention relates to hair conditioning shampoo compositions which includes: 1) from about 0.05 to about 5% of one or more dibasic amino acids; 2) from about 5 to about 50% of one or more surfactants; 3) from about 0.05 to about 10% of one or more silicone compounds; and 4) water. The invention also relates to hair conditioning compositions. The invention also relates to a method for conditioning the hair, which comprises contacting said hair with a composition according to the invention.
    Type: Grant
    Filed: April 19, 1999
    Date of Patent: August 13, 2002
    Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc
    Inventors: Daniel Raymond Pyles, Joanne Crudele, Trefor Evans, Varsha Shah, Wolfgang Robert Bergmann
  • Self-warming hair conditioning compositions
    Patent number: 6274128
    Abstract: An essentially anhydrous hair conditioning composition comprising: (a) one or more microporous materials each of which has an average pore size larger than the critical diameter of a water molecule; (b) carrier molecules or molecular aggregates that have critical diameters larger than the largest average pore size of the microporous materials; and (c) conditioner molecules or molecular aggregates that have critical diameters larger than the largest average pore size of the microporous materials. The invention also relates to a method for conditioning hair with warming which comprises administering to the hair, with water, the hair conditioner compositions of the invention.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: August 14, 2001
    Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.
    Inventors: Wolfgang Robert Bergmann, Ben Janchitraponvej, Trefor Evans