Patents by Inventor Cornelis Machiel Verheij

Cornelis Machiel Verheij 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).

  • Mercury vapor discharge lamp for use in color copying by means of electrophotographic processes
    Patent number: 4005328
    Abstract: Mercury vapor discharge lamp, in particular low pressure mercury vapor discharge lamp, for color copying by electrophotographic processes, which lamp has a luminescent layer which emits in a band in the blue part, in a band in the green part and in a band in the red part of the spectrum. The luminescent layer comprises two luminescent materials the first of which emits both in the said blue part and in the said green part of the spectrum, while the second emits in the said red part of the spectrum.
    Type: Grant
    Filed: November 26, 1974
    Date of Patent: January 25, 1977
    Assignee: U.S. Philips Corporation
    Inventors: Dragutin Radielovic, Cornelis Machiel Verheij