Patents by Inventor Donald J. Kwapien

Donald J. Kwapien 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).

  • Silicon carbide photodiode based flame scanner
    Patent number: 6472669
    Abstract: A flame scanner for effecting therewith individual burner flame discrimination in multi-fossil fuel fired steam generators. The subject flame scanner is based on the use therein of a silicon carbide photodiode that is operative for converting into a photocurrent ultraviolet light, which impinges upon the silicon carbide photodiode after passing through a focusing lens.
    Type: Grant
    Filed: February 2, 1999
    Date of Patent: October 29, 2002
    Assignee: ABB Research Ltd.
    Inventors: Paul H. Chase, Terry M. Grayson, Donald J. Kwapien, James M. Niziolek