Patents by Inventor Klass Keizer

Klass Keizer 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 production of crack-free semi-permeable inorganic membranes
    Patent number: 4711719
    Abstract: A process for the production of dry, crack-free mechanically and chemically stable, thin, semi-permeable, inorganic membranes by coating a microporous support of sintered metal oxide or metal hydroxide with a stable sol of Boehemite particles and subsequently drying and heating the coated support.
    Type: Grant
    Filed: September 5, 1984
    Date of Patent: December 8, 1987
    Inventors: Adriaan F. M. Leenaars, Anthonie J. Burggraaf, Klass Keizer