Patents by Inventor Elizabeth Mary Ryan

Elizabeth Mary Ryan 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).

  • Cleansing compositions
    Patent number: 6008171
    Abstract: A denture cleansing composition comprising an inorganic persalt bleaching agent, an effervescence generator and an aminoalkysilicone. The composition provides improved antiplaque, cleasing and antibacterial activity together with excellent physical and in-use performance characteristics.
    Type: Grant
    Filed: August 21, 1997
    Date of Patent: December 28, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Iain Allan Hughes, Elizabeth Mary Ryan, Christopher David White
  • Oral compositions
    Patent number: 5827505
    Abstract: An oral composition in the form of a toothpaste, powder, liquid dentifrice, mouthwash, denture cleanser, chewing gum or candy comprising one or more oral composition components selected from abrasives, binders, humectants, surfactants, fluoride ion sources, anticalculus agents and sweeteners and additionally comprising a dimethicone polyol as herein defined.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: October 27, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Iain Allan Hughes, Elizabeth Mary Ryan, Christopher David White
  • Detergent compositions comprising a dimethicone copolyol
    Patent number: 5759523
    Abstract: The invention is drawn to a denture cleaning composition which comprises 1) an inorganic persalt bleaching agent, 2) an effervescence generator, 3) a dimethicone copolyol selected from the group consisting of alkyl- and alkoxy- dimethicone copolyols having the formula (I) as set forth in the specification, and 4) optionally an organic peroxyacid bleach precursor.
    Type: Grant
    Filed: September 4, 1997
    Date of Patent: June 2, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Iain Allan Hughes, Elizabeth Mary Ryan, Christopher David White