Patents by Inventor Dana Helen Braithwaite

Dana Helen Braithwaite 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).

  • Synthesis and resolution of propionic acid derivatives
    Patent number: 5750764
    Abstract: A process for the production of disubstituted propionic acid derivatives which are intermediates in the synthesis of .alpha.-arylpropionic acids such as naproxen, involves the reaction of a naphthalene derivative such as 2-methoxynaphthalene, with an alkylating agent such as an alkyl pyruvate in the presence of a catalyst, and then dehydrating and hydrogenolising, or directly hydrogenolising, or derivatising and then hydrogenolising the product thereof, to produce the desired compound.
    Type: Grant
    Filed: November 5, 1996
    Date of Patent: May 12, 1998
    Assignee: AECI Limited
    Inventors: Stephanus Francois Marais, Thebeeapelo John Khaile, Owen Lungile Njamela, Dana Helen Braithwaite, Deborah Nicole Davidson, Christa Maria Jungmann, Christopher John Parkinson, Neil Stockenstrom Gardiner, Lucia Hendrina Steenkamp, Etienne Van Eeden Skein