Patents by Inventor Bengt G. Bjellqvist

Bengt G. Bjellqvist 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 preparation of aliphatic and alicyclic sulphonic acids by catalytic sulphoxidation of hydro-carbons
    Patent number: 3956371
    Abstract: A process for the preparation of saturated, nonbranched aliphatic or alicyclic sulphonic acids by reacting the corresponding hydrocarbons with sulphur dioxide and elementary oxygen is disclosed, in which process the reaction is carried out in the presence of copper as a catalyst. Reaction rates, considerably higher than those previously reported in literature, are obtained and the formation of by-products resulting in discolouration of the sulphonic acid is counteracted.
    Type: Grant
    Filed: September 13, 1972
    Date of Patent: May 11, 1976
    Assignee: Aminkemi AB
    Inventors: Bengt G. Bjellqvist, Torbjorn E. G. Westermark, Anders R. Axelsson, Martin J. Nilsson