Patents by Inventor Joachim Welgand

Joachim Welgand 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).

  • Fabric softener rinsing agents
    Patent number: 5364542
    Abstract: The present invention relates to a soft-rinsing agent comprising a mixture of two soft-rinsing components, each of which is a quaternary salt as described herein. The mixture may contain 10-90% of the first component and 90-10% by the second component.
    Type: Grant
    Filed: August 27, 1992
    Date of Patent: November 15, 1994
    Assignee: Rewo Chemische Werke GmbH
    Inventors: Horst Birkhan, Hans-Juergen Kohle, Joachim Welgand, Winfried Wehner