Patents by Inventor Henry A. Terwedow

Henry A. Terwedow 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).

  • Controlled release insecticide composition
    Patent number: 4623540
    Abstract: An emulsifiable concentrate of Imidan, an acrylic or styrene resin, a surfactant and an aliphatic organic solvent functions as a controlled release insecticide when applied to plant foliage. The organic solvent is a solvent for the resin and the surfactant but is a non-solvent for the Imidan.
    Type: Grant
    Filed: July 9, 1981
    Date of Patent: November 18, 1986
    Assignee: Les Produits Organiques du Santerre-Orsan S.A. ("Orsan")
    Inventors: Costanza: John R., Henry A. Terwedow
  • Mosquito development inhibitor employing substituted phenols
    Patent number: 4525362
    Abstract: Selected substituted phenols may be usefully employed as mosquito development inhibitors.
    Type: Grant
    Filed: March 1, 1984
    Date of Patent: June 25, 1985
    Inventors: Sol J. Barer, Henry A. Terwedow, Jr.
  • Controlled release insecticide composition
    Patent number: 4470966
    Abstract: An emulsifiable concentrate of Imidan, an acrylic resin, a surfactant and a common organic solvent functions as a controlled release insecticide when applied to plant foliage.
    Type: Grant
    Filed: March 15, 1982
    Date of Patent: September 11, 1984
    Assignee: Celanese Corporation
    Inventors: John R. Costanza, Henry A. Terwedow, Jr.
  • Seed coating composition based on carbamate pesticide and non-alkaline amorphous carbon
    Patent number: 4383391
    Abstract: The phytoxicity of a carbamate pesticide such as carbofuran (2,3-dihydro-2,2-dimethyl-7-benzofuranol methylcarbamate) contained in a seed coating composition is nullified or minimized without materially reducing the pesticidal effectiveness of the carbamate by the presence in the seed coating composition of an activiated charcoal powder of neutral to acid pH.
    Type: Grant
    Filed: September 21, 1981
    Date of Patent: May 17, 1983
    Assignee: Celanese Corporation
    Inventors: Norman W. Thomas, Henry A. Terwedow