Patents by Inventor Gerhard Spirik

Gerhard Spirik 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).

  • Use of esters of branch-chain carboxylic acids with branch-chain alcohols as ingredients of cosmetic agents
    Patent number: 5711939
    Abstract: The invention comprises the use of multiple-branch esters of the common formula A, formed from branch-chain carboxylic acids and branch-chain alcohols, as ingredients of cosmetic agents for the protection and care of human skin ##STR1## as well as cosmetic agents containing such branched esters of common formula A.
    Type: Grant
    Filed: May 29, 1990
    Date of Patent: January 27, 1998
    Assignee: Dragoco Gerberding & Co., GmbH
    Inventors: Ernst-Joachim Brunke, Willi Rojahn, Gerhard Spirik