Patents by Inventor Dennis Edward Clark

Dennis Edward Clark 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 potassium clavulanate in rossette form
    Patent number: 5750685
    Abstract: A process is disclosed for preparing potassium clavulanate in the form of crystalline rosettes by addition of a solution of clavulanate ions to a solution of potassium ions in a non-solvent for potassium clavulanate.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 12, 1998
    Assignee: SmithKline Beecham, p.l.c.
    Inventors: Dennis Edward Clark, Shaukat Hussain Malik, Paul Gerard Butterly, Clive Elton Badman, Jeffrey David Haseler
  • Pharmaceutical compositions comprising potassium clavulanate and methods of using them
    Patent number: 5679789
    Abstract: Potassium clavulanate exists in a novel crystalline habit, namely in the form of rosettes, having improved processing properties. The novel form may, for example, be obtained by crystallization or recrystallization using inverse precipitation, preferably at 8.degree.-15.degree. C.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 21, 1997
    Assignee: Beecham Group, p.l.c.
    Inventors: Dennis Edward Clark, Shaukat Hussain Malik, Paul Gerard Butterly, Clive Elton Badman, Jeffrey David Haseler
  • Injectable amoxycillin compositions
    Patent number: 4029804
    Abstract: Injectable amoxycillin solutions of enhanced stability comprising a water-soluble salt of amoxycillin such as sodium amoxycillin dissolved in a sterile mixture of water and at least one water-miscible pharmaceutically acceptable alcoholic compound preferably including ethanol. A two-part container or syringe is used of which one part contains a predetermined amount of amoxycillin in dry powder form and the second part contains a predetermined amount of a sterile mixture of water and the alcoholic compound.
    Type: Grant
    Filed: September 22, 1975
    Date of Patent: June 14, 1977
    Assignee: Beecham Group Limited
    Inventors: Dennis Edward Clark, Robert Charles Blyth