Patents by Inventor John G. Black

John G. Black 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).

  • Pyroglutamic acid esters, their synthesis and use in topical products
    Patent number: 5190980
    Abstract: The invention relates to esters of pyroglutamic acid, their synthesis and their use in products for topical application to human skin as precursors of pyroglutamic acid.
    Type: Grant
    Filed: April 26, 1991
    Date of Patent: March 2, 1993
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: John G. Black, Ian R. Scott
  • Pyroglutamic acid esters, their synthesis and use in topical products
    Patent number: 4774255
    Abstract: Esters of pyroglutamic acid having the structure: ##STR1## where R' and R" are the same or different and are each represented by H or the groupingCH.sub.3 [(CH.sub.2).sub.w (CHCH.sub.3).sub.x (CHOH).sub.y (CH.dbd.CH).sub.z ]--wheren is an integer of from 1 to 3w is zero, or an integer of from 1 to 21x is zero, or an integer of from 1 to 4y is zero, or an integer of from 1 to 2z is zero, or an integer of from 1 to 4provided that the total number of carbon atoms in each of said grouping will not exceed 22;and provided also that when the subgrouping (CH.dbd.CH) is present, then the total number of carbon atoms in said grouping will be from 16 to 22. Synthesis, and uses of the said esters in topical compositions are also provided.
    Type: Grant
    Filed: August 9, 1985
    Date of Patent: September 27, 1988
    Assignee: Lever Brothers Company
    Inventors: John G. Black, Ian R. Scott
  • Skin treatment compositions
    Patent number: 4424234
    Abstract: A cosmetically acceptable aqueous composition for topical application to human skin to provide skin benefit comprises an hydroxylated C.sub.6 to C.sub.10 carboxylic acid and a cosmetically acceptable vehicle other than water.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: January 3, 1984
    Assignee: Lever Brothers Company
    Inventors: Susan G. Alderson, Martin D. Barratt, John G. Black