Patents by Inventor Teunis Eikelboom

Teunis Eikelboom 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).

  • Catalytic preparation of carbonamides
    Patent number: 4655972
    Abstract: Carbonamides are prepared from carboxylic acids and ammonia in the presence of a catalytic amount of a hydrated oxide.Preferably a hydrated titanium-, zirconium- or tin oxide in an amount between 0.05 to 10% by weight is used. The hydrated oxide contains at least 4% of water.
    Type: Grant
    Filed: July 3, 1984
    Date of Patent: April 7, 1987
    Assignee: Internationale Octrooi Maatschappij "Octropa" B.V.
    Inventors: Teunis Eikelboom, John A. Rand, Pieter M. van Dijk