Patents by Inventor Franciscus J. G. van der Ouderaa

Franciscus J. G. van der Ouderaa 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).

  • Dentifrice compositions
    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
  • Dentifrice compositions
    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
  • Dentifrice compositions
    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