Patents by Inventor Gerhard Eck

Gerhard Eck 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 producing luminescent dyestuffs from plant materials
    Patent number: 5042989
    Abstract: Plant materials such as petals, leaves, fruits, are gathered, dried at a minimum temperature of 70.degree. C., and pulverized so as to produce light-fast, lustrous dyestuffs. Subsequently, an acid or base substance is added. It is preferred that a pH value that corresponds to the pH value of the plant materials when fresh is set. A binding agent can be added subsequently.
    Type: Grant
    Filed: April 26, 1990
    Date of Patent: August 27, 1991
    Assignee: MASID Gesellschaft fur angewandte Umweltforschung oHG Eck, Runkel und Partner
    Inventor: Gerhard Eck