Patents by Inventor H. Robinson Ertelt

H. Robinson Ertelt 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).

  • Combinations of neem seed extract and bifenthrin for control of ectoparasites on animals
    Patent number: 5472700
    Abstract: Combinations of bifenthrin with azadirachtin-containing neem seed extracts are synergistic in controlling acarids, especially pyrethroid-resistant mites, over a wide range of azadirachtin to bifenthrin ratios. The combinations are also used for the control of ectoparasites on animals.
    Type: Grant
    Filed: October 3, 1994
    Date of Patent: December 5, 1995
    Assignee: FMC Corporation
    Inventors: Charles A. Staetz, H. Robinson Ertelt, Gert P. Volpp
  • Acaricidal combinations of neem seed extract and bifenthrin
    Patent number: 5352672
    Abstract: Combinations of bifenthrin with azadirachtin-containing neem seed extracts are synergistic in controlling acarids, especially pyrethroid-resistant mites, over a wide range of azadirachtin to bifenthrin ratios.
    Type: Grant
    Filed: October 20, 1993
    Date of Patent: October 4, 1994
    Assignee: FMC Corporation
    Inventors: Charles A. Staetz, H. Robinson Ertelt, Gert P. Volpp