Patents by Inventor James Sharp

James Sharp 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 preparing chenodeoxycholic acid
    Patent number: 4022806
    Abstract: A process for preparing a form of chenodeoxycholic acid having a melting point of ca. 166.degree. C from the amorphous form of the acid or from the form melting at ca. 120.degree. C. The amorphous or low melting forms of chenodeoxycholic acid, in a suspension in water, are seeded with preprepared crystalline acid of the high melting form and the acid product treated, in suspension, at a temperature of not greater than 85.degree. C to complete the conversion of the chenodeoxycholic acid to the high melting form. Crude chenodeoxycholic acid of the low melting form is purified by a process which involves forming a mixture of the crude acid, methanol, a base and a calcium or strontium salt, separating the precipitated crystalline calcium or strontium chenodeoxycholanate, dissolving the salt in a solution of acetic or propionic acid, diluting the solution with water to precipitate the free acid in purified form and recovering the purified acid.
    Type: Grant
    Filed: December 23, 1975
    Date of Patent: May 10, 1977
    Assignee: The Union International Company Ltd.
    Inventors: Henry Francis Frost, Fritz Fabian, Christopher James Sharpe, William Arthur Jones
  • Anilinobenzothiazoles as antidepressants
    Patent number: 3957999
    Abstract: New anilinobenzothiazoles are used for treating depression.
    Type: Grant
    Filed: September 18, 1974
    Date of Patent: May 18, 1976
    Assignee: The Boots Company
    Inventor: Christopher James Sharpe