JH

John C. Helmer

VA Varian: 11 patents #9 of 684Top 2%
AT Agilent Technologies: 2 patents #1,067 of 3,411Top 35%
NS Novellus Systems: 1 patents #479 of 780Top 65%
Overall (All Time): #325,159 of 4,157,543Top 8%
15
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
8152442 Centripetal pumping stage and vacuum pump incorporating such pumping stage Silvio Giors 2012-04-10
8070419 Spiral pumping stage and vacuum pump incorporating such pumping stage Silvio Giors 2011-12-06
6024843 Sputtering apparatus with a rotating magnet array having a geometry for specified target erosion profile Robert L. Anderson 2000-02-15
5635036 Collimated deposition apparatus and method R. Ernest Demaray, Vance E. Hoffman, Jr., Young H. Park, Ronald R. Cochran 1997-06-03
5482611 Physical vapor deposition employing ion extraction from a plasma Kwok Fai Lai, Robert L. Anderson 1996-01-09
5456575 Non-centric improved pumping stage for turbomolecular pumps Giampaolo Levi 1995-10-10
5449270 Tangential flow pumping channel for turbomolecular pumps Giampaolo Levi 1995-09-12
5330628 Collimated deposition apparatus and method R. Ernest Demaray, Vance E. Hoffman, Jr., Young H. Park, Ronald R. Cochran 1994-07-19
5252194 Rotating sputtering apparatus for selected erosion Richard E. Demaray, Robert L. Anderson, Young H. Park, Ronald R. Cochran, Vance E. Hoffman, Jr. 1993-10-12
5235409 Optical detection system for capillary separation columns Dean S. Burgi, Ring-Ling Chien 1993-08-10
4995958 Sputtering apparatus with a rotating magnet array having a geometry for specified target erosion profile Robert L. Anderson 1991-02-26
4774437 Inverted re-entrant magnetron ion source Kenneth J. Doniger 1988-09-27
4629548 Planar penning magnetron sputtering device 1986-12-16
4606806 Magnetron sputter device having planar and curved targets 1986-08-19
4437812 Single-pump multiple stroke proportioning for gradient elution liquid chromatography Ahmad Abu-Shumays, Stephen J. Luchetti 1984-03-20