Patents by Inventor Michael J. Hopkinson

Michael J. Hopkinson 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).

  • Surfactant systems for agriculturally active compounds
    Patent number: 6746988
    Abstract: The invention provides surfactant systems comprising alkyl polyglycosides, anionic surfactants and basic compounds. The invention also provides agricultural compositions comprising agriculturally active compounds, alkyl polyglycosides, anionic surfactants and basic compounds. The surfactant systems and agricultural compositions may further comprise nonionic surfactants.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: June 8, 2004
    Assignee: Syngenta Crop Protection, Inc.
    Inventors: Michael J. Hopkinson, Carolyn E. Moore, Jeffrey D. Fowler
  • Surfactant systems for agriculturally active compounds
    Publication number: 20030050194
    Abstract: The invention provides surfactant systems comprising alkyl polyglycosides, anionic surfactants and basic compounds. The invention also provides agricultural compositions comprising agriculturally active compounds, alkyl polyglycosides, anionic surfactants and basic compounds. The surfactant systems and agricultural compositions may further comprise nonionic surfactants.
    Type: Application
    Filed: September 5, 2002
    Publication date: March 13, 2003
    Inventors: Michael J. Hopkinson, Carolyn E. Moore, Jeffrey D. Fowler
  • Surfactant compositions
    Patent number: 5958835
    Abstract: Flowable herbicidal compositions which contain an active component combination of at least one triazine and at least one chloroacetanilide with a surfactant component. This surfactant component, which consists of an anionic compound based on a monosulfuric acid ester of alkyl or alkyphenol polyglycol ethers as well as at least one nonionic alkyl or alkylphenol polyglycol ether, gives stable dispersions of the concentrated composition and forms stable dispersions of dilutions of the compositions suitable for direct use.
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: September 28, 1999
    Assignee: Novartis Corporation (formerly Ciba-Geigy Corporation)
    Inventors: Larry I. Baker, Michael J. Hopkinson
  • Herbicidal compositions comprising diamino-1,3,5-triazine and chloroacetanilide herbicides and a surfactant system
    Patent number: 5731266
    Abstract: Flowable herbicidal compositions which contain an active component combination of at least one triazine and at least one chloroacetanilide with a surfactant component. This surfactant component, which consists of an anionic compound based on a monosulfuric acid ester of alkyl or alkyphenol polyglycol ethers as well as at least one nonionic alkyl or alkylphenol polyglycol ether, gives stable dispersions of the concentrated composition and forms stable dispersions of dilutions of the compositions suitable for direct use.
    Type: Grant
    Filed: April 18, 1994
    Date of Patent: March 24, 1998
    Assignee: Ciba-Geigy Corporation
    Inventors: Larry I. Baker, Michael J. Hopkinson
  • Process for the preparation of microcapsules
    Patent number: 4938797
    Abstract: The invention relates to a process for the preparation of microcapsules having a capsule wall of polyurea and encapsulating a water-immiscible pesticide. The process comprises first dispersing a solution of a polyisocyanate in the sparingly water-soluble pesticide, in the presence of an anionic dispersant and at least one nonionic protective colloid and/or a nonionic surfactant, and subsequently reacting the dispersion with a polyamine, to give a stable aqueous suspension of microcapsules which can be used either direct or after dilution with water as pesticidal composition.
    Type: Grant
    Filed: June 7, 1988
    Date of Patent: July 3, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Hans W. Hasslin, Michael J. Hopkinson