Patents by Inventor Charles A. Saxton

Charles A. Saxton 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).

  • Patent number: 5470561
    Abstract: The present invention relates to anti-plaque mouthwash compositions that contain a zinc salt and Triclosan as the anti-plaque system. According to the present invention effective, clear and stable mouthwash compositions with a zinc salt and Triclosan and a humectant system can be obtained with a water level of more than 60% by weight, if the compositions further comprise a surfactant system that comprises a mixture of a nonionic and an anionic surface-active agent.It is essential that the nonionic surface-active agent should be of the type H-(O-CH.sub.2 CH.sub.2).sub.a -(O-CH(CH.sub.3)CH.sub.2).sub.b -(O-CH.sub.2 CH.sub.2).sub.a -OH and should be present in an amount of from 0.5-3% by weight of the composition.The amount of the anionic surface-active agent in the compositions of the present invention should be such, that the weight ratio of the nonionic to the anionic surfaceactive agent ranges from 4-35, preferably from 5-20.
    Type: Grant
    Filed: May 26, 1994
    Date of Patent: November 28, 1995
    Assignee: Chesebrough-Pond's USA Co., Division of Conopco, Inc.
    Inventors: Jan Klugkist, Charles A. Saxton
  • Patent number: 4749561
    Abstract: It is disclosed that a dentifrice which includes a surfactant and an anti-plaque agent comprising a substantially water-insoluble non-cationic antimicrobial agent or a zinc salt or a mixture thereof has enhanced activity when the dentifrice comprises at least 0.2% by weight of a lamellar liquid crystal surfactant phase having a lamellar spacing of less than 6.0 nm.
    Type: Grant
    Filed: September 11, 1987
    Date of Patent: June 7, 1988
    Assignee: Lever Brothers Company
    Inventors: Roger M. Lane, Derek M. C. Hull, Charles A. Saxton, Franciscus J. G. Van Der Ouderaa
  • Patent number: 4749562
    Abstract: It is disclosed that a dentifrice which includes a surfactant and an anti-plaque agent comprising a substantially water-insoluble non-cationic antimicrobial agent or a zinc salt or a mixture thereof has enhanced activity when the dentifrice comprises at least 0.2% by weight of a lamellar liquid crystal surfactant phase having a lamellar spacing of less than 6.0 nm.
    Type: Grant
    Filed: September 11, 1987
    Date of Patent: June 7, 1988
    Assignee: Lever Brothers Company
    Inventors: Roger M. Lane, Derek M. C. Hull, Charles A. Saxton, Franciscus J. G. Van der Ouderaa
  • Patent number: 4656031
    Abstract: It is disclosed that a dentifrice which includes a surfactant and an anti-plaque agent comprising a substantially water-insoluble non-cationic antimicrobial agent or a zinc salt or a mixture thereof has enhanced activity when the dentifrice comprises at least 0.2% by weight of a lamellar liquid crystal surfactant phase having a lamellar spacing of less than 6.0 nm.
    Type: Grant
    Filed: May 7, 1985
    Date of Patent: April 7, 1987
    Assignee: Lever Brothers Company
    Inventors: Roger M. Lane, Derek M. C. Hull, Charles A. Saxton, Franciscus J. G. van der Ouderaa