Patents by Inventor Franz-Josef Weis

Franz-Josef Weis 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).

  • Purification of carboxylic acid esters containing aldehydes and/or acetals
    Patent number: 4350572
    Abstract: A process for purifying carboxylic acid esters which have been obtained by reacting olefinically unsaturated compounds with carbon monoxide and alkanols and which contain aldehydes or acetals, wherein the said esters are treated with a strongly acidic agent, with or without addition of water.
    Type: Grant
    Filed: November 6, 1980
    Date of Patent: September 21, 1982
    Assignee: BASF Aktiengesellschaft
    Inventors: Rudolf Kummer, Volker Taglieber, Franz-Josef Weis, Heinz-Walter Schneider