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USPTO Patent Rankings Data through Dec 31, 2025
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David J. Drage — 7 Patents

TETegal: 5 patents #13 of 53Top 25%
MSMatrix Integrated Systems: 1 patents #7 of 14Top 50%
Chicago, IL: #1,819 of 13,327 inventorsTop 15%
Illinois: #13,121 of 84,256 inventorsTop 20%
Overall (All Time): #680,018 of 4,157,543Top 20%
7 Patents All Time
David J. Drage has been granted 7 US patents while listed as an inventor at Tegal. The first was granted in 1980 and the most recent in November 1990. David J. Drage ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list David J. Drage in Chicago, IL, US.

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
4971653 Temperature controlled chuck for elevated temperature etch processing Gary Powell, Tony Sie 1990-11-20
4793975 Plasma Reactor with removable insert 1988-12-27
4790258 Magnetically coupled wafer lift pins Roger B. Lachenbruch, Herbert G. Drake, Jr., Jerris H. Peavey 1988-12-13
4780169 Non-uniform gas inlet for dry etching apparatus Mark M. Stark, Douglas H. Warenback 1988-10-25
4697089 Dual wavelength sensor which employs object as part of a corner reflector 1987-09-29
4590042 Plasma reactor having slotted manifold 1986-05-20
4207466 Infrared proximity detecting apparatus Lawrence N. Harkness 1980-06-10