Patents by Inventor Harold E. Rife

Harold E. Rife 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).

  • Crawling insect trap
    Patent number: 4263740
    Abstract: In a crawling insect trap, an inwardly sloping decline covered with and loosely adhering particulate material, where upon crawling insect when attempting to walk up said decline, causes the loosely adhering particulate material to give way and causing the insect to fall into the interior of the trap.
    Type: Grant
    Filed: March 9, 1979
    Date of Patent: April 28, 1981
    Assignee: American Home Products Corp.
    Inventors: W. Lance H. Hemsarth, Harold E. Rife
  • Insecticidal pyrethroid compositions having increased efficacy
    Patent number: 3954977
    Abstract: Insecticidal compositions are described containing natural and/or synthetic pyrethroids, an emulsifier and a N,N-(lower)alkyl fatty acid amide. The use of the emulsifier system described herein prolongs the residual insecticidal pyrethroid activity.
    Type: Grant
    Filed: February 19, 1974
    Date of Patent: May 4, 1976
    Assignee: American Home Products Corporation
    Inventor: Harold E. Rife