Patents by Inventor Gerard J. Legato

Gerard J. Legato 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).

  • Novel shampoo composition containing a water-soluble cationic polymer
    Patent number: 4009256
    Abstract: A shampoo composition is disclosed comprising an aqueous solution of (1.) a cationic polymer which is a water-soluble acid salt of an aminoalkyl ester of a carboxylic acid polymer, (2.) an amphoteric detergent, and, (3.) optionally, at least one nonionic surfactant or at least one ionic surfactant or a combination thereof, wherein any plurality of ionic surfactants utilized consists of those of the same ionogenic class.
    Type: Grant
    Filed: November 13, 1975
    Date of Patent: February 22, 1977
    Assignee: National Starch and Chemical Corporation
    Inventors: Frank A. Nowak, Jr., Albert L. Micchelli, Gerard J. Legato
  • Hair coloring composition containing a water-soluble cationic polymer and a process for use thereof
    Patent number: 3973901
    Abstract: A process for coloring hair and the hair coloring compositions employed therefor are disclosed. Said process essentially comprises treating the hair with an acid dye in the presence of an aqueous solution of a water soluble cationic polymer selected from the group consisting of water-soluble acid salts of aminoalkyl esters of homo- and copolymers of unsaturated carboxylic acids having from 3 to 5 carbon atoms. Said hair coloring composition essentially comprises an aqueous solution of a water-soluble acid salt of an aminoalkyl ester of a homo- or copolymer of said unsaturated carboxylic acids in combination with a small amount of an acid dye.
    Type: Grant
    Filed: June 18, 1975
    Date of Patent: August 10, 1976
    Assignee: National Starch and Chemical Corporation
    Inventors: Albert L. Micchelli, Frank A. Nowak, Jr., Gerard J. Legato