Patents by Inventor Nicolaas P. Ferreira

Nicolaas P. Ferreira 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).

  • Microbiological process for degradation of steroids
    Patent number: 4923403
    Abstract: A process for preparing 3a.alpha.-H-4.alpha.-[3'-propionic acid]-5.alpha.-hydroxy-7a.beta.-methyl-hexahydro-1-indanone-.delta.-lacton e, having the formula ##STR1## for the chemical synthesis of a pharmaceutical steroid, which includes cultivating, in the presence of cholesterol, sitosterol, stigmasterol, or a mixture of sitosterol and sitostanol, a mutant of the parent species R. australis of the genus Rhodococcus.
    Type: Grant
    Filed: August 15, 1985
    Date of Patent: May 8, 1990
    Assignee: South African Inventions Development Corp.
    Inventor: Nicolaas P. Ferreira