Patents by Inventor Siegfried Meinstein

Siegfried Meinstein 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).

  • Low water neutralization to produce a highly active alkaryl sulfonate
    Patent number: 4690785
    Abstract: An improved low water neutralization energy-saving process for the preparation of an alkaryl sulfonate by combining an alkaryl sulfonic acid with a salt-forming base, and utilizing the heat generated during the neutralization reaction to drive off the water present in the reaction mixture.
    Type: Grant
    Filed: July 7, 1986
    Date of Patent: September 1, 1987
    Assignee: Witco Corporation
    Inventors: Marvin L. Mausner, Siegfried Meinstein