Patents by Inventor Dean A. Smith

Dean A. Smith 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).

  • Antimicrobial quaternary surfactants based upon alkyl polyglycoside
    Patent number: 7084129
    Abstract: The invention relates to a series of polyglycoside derivatives that contain water-soluble cationic groups introduced into the molecule by reaction with the hydroxyl groups present in the starting polyglycoside molecule, with an epoxy cationic material. The materials are multifunctional, providing not only wetting, and conditioning, but also antimicrobial properties, making them ideal for personal care applications.
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: August 1, 2006
    Assignee: Colonial Chemical
    Inventors: Dean A. Smith, David Anderson, Anthony J. O'Lenick, Jr.
  • Non-ionic surfactants based upon alkyl polyglucoside
    Patent number: 7008930
    Abstract: The invention relates to a series of polyglycoside derivatives that contain water-soluble groups introduced into the molecule by reaction with the hydroxyl groups present in the starting polyglycoside molecule. The preferred products have more than one water-soluble group per molecule and are made with mild reagents to avoid discoloration and mal odor. The most preferred products have between 2 and 3 functional groups per molecule. The compounds are alkoxylated alkyl polyglucoside compounds.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: March 7, 2006
    Assignee: Colonial Chemical INC
    Inventors: Anthony J. O'Lenick, Jr., Dean A. Smith, David Anderson
  • Amphoteric surfactants based upon alkyl polyglucoside
    Patent number: 6958315
    Abstract: The invention relates to a series of polyglycoside derivatives that contain water-soluble groups introduced into the molecule by reaction with the hydroxyl groups present in the starting polyglycoside molecule. The preferred products have more than one water-soluble group per molecule and are made with mild reagents to avoid discoloration and mal odor. The most preferred products have between 2 and 3 functional groups per molecule. The compounds are amino functional and betaine functional alkyl polyglucoside.
    Type: Grant
    Filed: September 24, 2003
    Date of Patent: October 25, 2005
    Assignee: Colonial Chemical
    Inventors: David Anderson, Dean A. Smith, Anthony J. O'Lenick, Jr.
  • Personal care products based upon surfactants based upon alkyl polyglucoside quaternary compounds
    Patent number: 6881710
    Abstract: The present invention relates to personal care products based upon a novel series of polyglucoside quarternary compounds. These materials are surprisingly, extremely effective multi-functional surfactants used in shampoos and body wash products, providing the possibility of making a personal care product with only one surfactant. These unique products provide detergency, foam, conditioning, antimicrobial activity, wetting properties of formulations in a single molecule, and are derived from natural sugar compounds.
    Type: Grant
    Filed: March 4, 2004
    Date of Patent: April 19, 2005
    Assignee: Colonial Chemical Inc.
    Inventors: Anthony J. O'Lenick, Jr., Dean A. Smith, David Anderson
  • Skin moisturization compound
    Patent number: 6869977
    Abstract: The present invention discloses a series of quaternary nitrogen compounds in which the four groups surrounding nitrogen are (a) one glyceryl portion, (b) two methyl groups and (c) a hydroxy ethyl group. The compound of the present invention is an outstanding moisturizer when applied to skin.
    Type: Grant
    Filed: April 9, 2004
    Date of Patent: March 22, 2005
    Assignee: Colonial Chemical Inc.
    Inventors: Anthony J. O'Lenick, Jr., Dean A. Smith