Patents by Inventor Leslie D. Ryan

Leslie D. 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).

  • Bicomponent material
    Patent number: 5019062
    Abstract: A bicomponent material which allows liquids to pass in a first direction, but substantially prevents the liquids from passing in the opposite direction, is disclosed. The material also exposes any gases attempting to pass in the direction opposite to that of the liquid transmission to an odor control lamina. The material is especially suitable for use with articles which deal with bodily fluids and the gases generated therefrom.
    Type: Grant
    Filed: June 23, 1988
    Date of Patent: May 28, 1991
    Assignee: The Procter & Gamble Company
    Inventors: Leslie D. Ryan, Mark J. Steinhardt, Milton D. Spahni, James C. Baird
  • Oral compositions
    Patent number: 4959204
    Abstract: Oral compositions such as toothpastes, mouthwashes, lozenges and chewing gum containing an antimicrobial agent which is effective against plaque/gingivitis and mouth odor ar disclosed.
    Type: Grant
    Filed: February 2, 1987
    Date of Patent: September 25, 1990
    Assignee: The Proctor & Gamble Company
    Inventor: Leslie D. Ryan
  • Disposable absorbent articles for incontinent individuals
    Patent number: 4842593
    Abstract: Absorbent articles containing both an acidic buffering agent and a non-toxic, non-irritating, non-volatile antimicrobial agent are disclosed. The acidic buffering agent is preferably also an absorbent gelling agent which can imbibe aqueous body fluids in addition to acting as a buffer. Such articles are especially suitable for maintaining the pH of urine and feces discharged into the article at value below about 7.5. This in turn helps to prevent or reduce diaper rash and control odor caused by the production of ammonia.
    Type: Grant
    Filed: October 9, 1987
    Date of Patent: June 27, 1989
    Assignee: The Procter & Gamble Company
    Inventors: William E. Jordan, Leslie D. Ryan
  • Oral compositions
    Patent number: 4663154
    Abstract: Oral compositions such as toothpastes, mouthwashes, lozenges and chewing gum containing an antimicrobial agent which is effective against plaque/gingivitis and mouth odor are disclosed.
    Type: Grant
    Filed: June 27, 1984
    Date of Patent: May 5, 1987
    Assignee: The Procter & Gamble Company
    Inventor: Leslie D. Ryan
  • Oral compositions
    Patent number: 4472373
    Abstract: Oral compositions such as toothpastes, mouthwashes, lozenges and chewing gum containing an antimicrobial agent which is effective against plaque/gingivitis and mouth odor are disclosed.
    Type: Grant
    Filed: May 9, 1983
    Date of Patent: September 18, 1984
    Assignee: The Procter & Gamble Company
    Inventor: Leslie D. Ryan