Patents by Inventor Roger L. Mc Mullen, Jr.

Roger L. Mc Mullen, Jr. 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).

  • Stable, aqueous cationic hydrogel
    Patent number: 6667029
    Abstract: A stable, aqueous cationic hydrogel of, by weight, 1-50% of a crosslinked cationic copolymer of 5-95% vinylpyrrolidone (VP) and 5-95% 3-dimethylaminopropyl(meth)acrylamide (DMAPMA) monomers, a crosslinking agent in an amount of 0.05-1% of said monomers, and water is described. The hydrogel has a pH of about 10 and a Brookfield viscosity of about 650 (Model DV-II+, RV spindle #3, speed 10 rpm); it can increase its viscosity by up to 40× at a pH of 3-9 and absorb up to 200× its weight of water. The hydrogel also can effectively condition hair even in the presence of an anionic surfactant.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: December 23, 2003
    Assignee: ISP Investments Inc.
    Inventors: Yuanzhen Zhong, Janusz Jachowicz, Philip F. Wolf, Roger L. Mc Mullen, Jr.
  • Conditioning/styling terpolymers
    Patent number: 6207778
    Abstract: What is described herein are conditioning/styling terpolymers of vinylpyrrolidone (VP), dimethylaminopropyl methacrylamide (DMAPMA) and C9-C24 alkyl dimethylaminopropyl methacrylic acid quaternized monomers (QDMAPMA), in a defined compositional range. Hair and skin care compositions which include these terpolymers exhibit advantageous low tackiness and high humidity resistance.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: March 27, 2001
    Assignee: ISP Investments Inc.
    Inventors: Janusz Jachowicz, Kou-Chang Liu, Roger L. Mc Mullen, Jr., Thomas Winkler