Patents by Inventor Philippus J. van Rensburg

Philippus J. van Rensburg 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).

  • Insecticidal grooming article
    Patent number: 4604971
    Abstract: The invention provides an article for grooming an animal and comprising a grooming article of plastics material, the plastics material containing, over at least a portion thereof, at least one insecticide capable of blooming from the article onto the animal when the article is used. The article may be a brush or comb. If desired, only a portion thereof may contain insecticide.
    Type: Grant
    Filed: March 29, 1984
    Date of Patent: August 12, 1986
    Assignee: AECI Limited
    Inventors: Rodney C. Baker, Philippus J. van Rensburg
  • Control of ectoparasitic infestations of pigs
    Patent number: 4479968
    Abstract: The invention concerns a method for the control of ectoparasitic infestations of pigs. An insecticidal composition is applied to a localized area of the pig's body surface. The composition comprises a pesticide admixed with an aliphatic hydrocarbon oil.
    Type: Grant
    Filed: September 28, 1981
    Date of Patent: October 30, 1984
    Assignee: The Wellcome Foundation Ltd.
    Inventors: William B. Hyman, John Hoy, Philippus J. van Rensburg