Patents by Inventor David Robert Kamperman

David Robert Kamperman 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).

  • Metal dissolution process
    Patent number: 3945865
    Abstract: Evolution of NOx fumes during dissolution of metal values in mineral acid solutions of nitric acid can be eliminated by the addition of small quantities of hydrogen peroxide to the acid solution.
    Type: Grant
    Filed: July 22, 1974
    Date of Patent: March 23, 1976
    Assignee: Dart Environment and Services Company
    Inventor: David Robert Kamperman