Patents by Inventor Wilfired Uhlich

Wilfired Uhlich 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).

  • Method for the Purification of (Meth) Acrylic Acid
    Publication number: 20080091048
    Abstract: The present invention relates to a process for production of (meth)acrylic acid, whereby first a crude (meth)acrylic acid is produced and this crude (meth)acrylic acid is then continuously purified, whereby the continuous purification of the crude (meth)acrylic acid comprises the following process steps: a) in a composition comprising (meth)acrylic acid and impurities, precipitating the impurities in crystalline form from the composition; and b) separating the crystalline impurities precipitated from the composition. The invention also relates to the (meth)acrylic acid obtainable by this process, a device for production of (meth)acrylic acid, the use of the device or of a purification device for production of (meth)acrylic acid, (meth)acrylic acid, water-absorbing polymers, the use of water-absorbing polymers as well as fibers, sheets, foams and composites.
    Type: Application
    Filed: July 15, 2005
    Publication date: April 17, 2008
    Applicant: STOCKHAUSEN GMBH
    Inventors: Stefan Nordhoff, Torsten Balduf, Jurgen Mosler, Wilfired Uhlich, Dennis Thong Yu-Chiang, Axel Kobus, Arndt Selbach, Jurgen Kohn