Patents by Inventor Freddie J. Cremers

Freddie J. Cremers 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 of reducing nitrate or nitrile ions by means of liquid amalgams, with formation of hydroxylamine
    Patent number: 3976755
    Abstract: An improved process is disclosed wherein nitrate or nitrite ions, present in an alkaline solution, are reduced by means of a liquid alkali metal amalgam into hydroxylamine, using a reaction medium which, in addition to water, contains a water-miscible organic solvent for hydroxylamine and alkali nitrate or alkali nitrite.
    Type: Grant
    Filed: December 26, 1973
    Date of Patent: August 24, 1976
    Assignee: Stamicarbon B.V.
    Inventors: Marinus Alfenaar, Freddie J. Cremers