Patents Assigned to Charwell Consumer Products, Ltd.
  • Louse repellent
    Patent number: 5496852
    Abstract: A pediculicidal composition is provided which is effective against both adult lice and lice eggs and additionally exhibits a strong repellent effect on adult lice. The active ingredient is piperonal which is generally used in solution at a concentration of a least 3%. An additional component of the composition is a film-forming material which is capable of holding the piperonal in contact with the host for least two hours.
    Type: Grant
    Filed: June 8, 1994
    Date of Patent: March 5, 1996
    Assignee: Charwell Consumer Products, Ltd.
    Inventor: William J. Oliver