Patents by Inventor Dale R. Fillenwarth

Dale R. Fillenwarth 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).

  • Ammonium carbamate production
    Patent number: 4420635
    Abstract: This invention provides a dispensing assembly which is adapted to deliver two separate instantaneously coreactive liquid streams into an external contacting zone. The two reactants do not make contact within the body of the dispensing assembly, which prevents solid product formation and clogging within the dispensing assembly nozzles.The dispensing assembly is suitable for the coreaction of liquid carbon dioxide and liquid ammonia to produce free-flowing ammonium carbamate powder having a purity of substantially 100 percent.
    Type: Grant
    Filed: August 11, 1980
    Date of Patent: December 13, 1983
    Assignee: Philip Morris Inc.
    Inventors: James M. Washington, Dale R. Fillenwarth, Francis V. Utsch