Patents by Inventor Frederic M. Ascher

Frederic M. Ascher 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).

  • Programmed release device and method of use thereof
    Patent number: 4643893
    Abstract: There is disclosed a novel device intended to permit the regular and continuous release of chemical substances, including medicaments, and this, over a very long period of time, the release of the active substances following a predetermined kinetic effect from an insoluble polymeric matrix to a liquid medium which can be, particularly, that of an animal or human organism. The device has a specific density to remain in an animal rumen. There is also disclosed a method for treating animals by means of such devices.
    Type: Grant
    Filed: March 6, 1985
    Date of Patent: February 17, 1987
    Assignee: C.R.B. Virbac S.A.
    Inventors: Frederic M. Ascher, Jacques A. Cuvelier