Patents by Inventor Anthony O'Sullivan

Anthony O'Sullivan 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).

  • Macrolide compounds, their preparation and their use
    Patent number: 4963582
    Abstract: Compounds having a 16-membered macrolide ring, and related to the milbemycins and avermectins, with substituents at positions 5, 13, 25 and optionally also 23, have acaricidal, insecticidal and anthelmintic properties. They are useful for treating various pests in plants and animals.
    Type: Grant
    Filed: March 24, 1987
    Date of Patent: October 16, 1990
    Assignee: Sankyo Company Limited
    Inventors: Kazuo Sato, Toshiaki Yanai, Takao Kinoto, Keiji Tanaka, Akira Nishida, Toshimitsu Toyama, Bruno Frei, Anthony O'Sullivan
  • 13-Halomilbemycin derivatives, their preparation and compositions containing them
    Patent number: 4945105
    Abstract: Derivatives of milbemycins D, A.sub.3 and A.sub.4 and of the corresponding sec-butyl compound have a halogen atom at the 13-position; at the 5-position, they have an oxygen (keto) atom, an oxime group or a substituted oxime group. They may be prepared from known compounds by any appropriate combination of halogenation, ketonization and oximation.
    Type: Grant
    Filed: December 28, 1988
    Date of Patent: July 31, 1990
    Assignee: Sankyo Company Limited
    Inventors: Kazuo Sato, Toshiaki Yanai, Noritoshi Kitano, Akira Nishida, Bruno Frei, Anthony O'Sullivan