Patents by Inventor Richard V. Davies

Richard V. Davies 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).

  • Process for the preparation of potassium clavulanate from lithium clavulanate
    Patent number: 4255332
    Abstract: The present invention provides a process for the preparation of potassium clavulanate which process comprises contacting a concentrated solution of lithium clavulanate with a concentrated solution of potassium fluoride, potassium orthophosphate, potassium metaphosphate potassium carbonate or potassium bicarbonate, separating off the resulting precipitated lithium fluoride, lithium orthophosphate, lithium metaphosphate or lithium carbonate and thereafter recovering the potassium clavulanate from solution.
    Type: Grant
    Filed: August 23, 1978
    Date of Patent: March 10, 1981
    Assignee: Beecham Group Limited
    Inventor: Richard V. Davies