Patents by Inventor Werner Spalt

Werner Spalt 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 the preparation of polyglycol(meth)acrylates
    Patent number: 6040473
    Abstract: A transesterification process for the preparation of (meth)acrylates wherein a (meth)acrylic acid ester is re-esterified in the presence of a re-esterification catalyst comprised of calcium hydroxide or calcium hydroxide in combination with lithium chloride.
    Type: Grant
    Filed: July 20, 1998
    Date of Patent: March 21, 2000
    Assignee: Roehm GmbH
    Inventors: Joachim Knebel, Werner Spalt