Patents by Inventor Stephen David Levy

Stephen David Levy 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).

  • 3,4-Xylidine compounds which are useful as herbicides and as intermediates in the preparation of 2,6-dinitro-3,4-xylidine herbicides
    Patent number: 4119669
    Abstract: Novel N-alkyl-3,4-xylidine herbicides are disclosed, together with methods for their preparation and use for controlling undesirable plants by application of the xylidines to the foliage or soil containing the seeds thereof and are useful as intermediates in the preparation of 2,6-dinitro-3,4-xylidine herbicides.
    Type: Grant
    Filed: March 21, 1975
    Date of Patent: October 10, 1978
    Assignee: American Cyanamid Company
    Inventors: Stephen David Levy, Robert Eugene Diehl
  • Substituted phosphorothioic acid and method of use in siphonaptera compositions in warm-blooded animals
    Patent number: 4052381
    Abstract: This invention relates to phosphorothioic acid, O,O'-azodi-p-phenylene O,O,O',O' tetramethyl ester, trans and its use in siphonaptera compositions in warm-blooded animals.
    Type: Grant
    Filed: April 21, 1975
    Date of Patent: October 4, 1977
    Assignee: American Cyanamid Company
    Inventors: Michael Stanley Schrider, Stephen David Levy
  • O,O,O',O'-Tetramethyl O,O'-trithiodi-p-phenylene ester
    Patent number: 3978168
    Abstract: This invention relates to phosphorothioic acid, O,O,O',O'-tetramethyl O,O'-trithiodi-p-phenylene ester and its use in controlling insects and acarina in warm-blooded animals.
    Type: Grant
    Filed: April 21, 1975
    Date of Patent: August 31, 1976
    Assignee: American Cyanamid Company
    Inventors: Michael Stanley Schrider, Stephen David Levy
  • O,O,O',O'-Tetraethyl-S,S'-methylene-bis(p-phenylenethiomethylene)
    Patent number: 3966848
    Abstract: This invention relates to phosphorodithioic acid, O,O,O',O'-tetraethyl S,S'-methylenebis (p-phenylenethiomethylene) ester and its use in siphonaptera compositions in warm-blooded animals.
    Type: Grant
    Filed: April 21, 1975
    Date of Patent: June 29, 1976
    Assignee: American Cyanamid Company
    Inventors: Michael Stanley Schrider, Stephen David Levy
  • O,O,O',O'-Tetraalkyl, O,O'-vinylenedi-p-phenylene phosphorothioates and compositions containing the same for the control of siphonaptera infestations
    Patent number: 3966919
    Abstract: Method of using O,O,O',O'-tetraalkyl(C.sub.1 -C.sub.4)- O,O'-vinylenedi-p-phenylene phosphorothioates for the control of siphonaptera infestations and compositions containing said phosphorothioates as the active component, are described.
    Type: Grant
    Filed: February 12, 1975
    Date of Patent: June 29, 1976
    Assignee: American Cyanamid Company
    Inventors: Stephen David Levy, Gordon Paul Poeschel, Michael Stanley Schrider