Patents by Inventor Eduard H. Adema

Eduard H. Adema 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 isoprene
    Patent number: 4014952
    Abstract: Preparation of isoprene by conversion of isobutylene or an isobutylene-containing composition with formaldehyde in the gas phase, according to a one-step method, at temperatures of 150.degree. - 400.degree. C, and in the presence of a catalyst.
    Type: Grant
    Filed: July 15, 1975
    Date of Patent: March 29, 1977
    Assignee: Stamicarbon B.V.
    Inventors: Eduard H. Adema, Albert A. Van Geenen, Marinus J. A. M. Den Otter