Patents by Inventor Struppp Paul G.

Struppp Paul G. 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).

  • Photoionization mass spectroscopy flux monitor
    Patent number: 5397895
    Abstract: The present invention provides a photoionization mass spectroscopy flux monitor for gaseous species above a sample surface. It provides an in situ, real time, species specific, nonintrusive probe with a geometry compatible with conventional MBE growth chambers. Gaseous species are photoionized above a sample surface and the ionized gaseous species are extracted parallel to the sample surface and coupled into a mass spectrometer inlet adjacent to the sample surface. The geometry of the flux monitor allows for simultaneous coupling of a charged particle beam with the sample surface, for example for monitoring film growth with RHEED.
    Type: Grant
    Filed: February 19, 1993
    Date of Patent: March 14, 1995
    Assignee: The United States of America as represented by the Secretary of Commerce
    Inventors: Stephen R. Leone, Struppp Paul G., Russell V. Smilgys, April L. Alstrin