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USPTO Patent Rankings Data through Dec 31, 2025
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Clarence E. Cowan — 25 Patents

CMCascade Microtech: 23 patents #11 of 118Top 10%
Tektronix: 1 patents #823 of 1,698Top 50%
Newberg, OR: #9 of 252 inventorsTop 4%
Oregon: #1,672 of 28,073 inventorsTop 6%
Overall (All Time): #158,593 of 4,157,543Top 4%
25 Patents All Time
Clarence E. Cowan has been granted 25 US patents while listed as an inventor at Cascade Microtech. The first was granted in 1989 and the most recent in November 2009. Clarence E. Cowan ranks #158,593 of 4,157,543 US inventors in our database (top 3.8%). Patent records list Clarence E. Cowan in Newberg, OR, US.

Patents per Year

Patents granted per year, 1989 to 2009Bar chart with a peak of 6 patents in 2006.peak 61989: 1 patents19892000: 1 patents20002002: 1 patents20022003: 3 patents20032004: 1 patents20042005: 4 patents20052006: 6 patents20062007: 3 patents20072008: 2 patents20082009: 3 patents2009

Issued Patents All Time

Showing 1–25 of 25 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7616017 Probe station thermal chuck with shielding for capacitive current Paul A. Tervo, John Dunklee 2009-11-10 $1,808,000
7550984 Probe station with low noise characteristics Timothy Lesher, Brad Miller, Michael E. Simmons, Frank Gray, Cynthia McDonald 2009-06-23 $746,000
7498828 Probe station with low inductance path John Dunklee 2009-03-03 $402,000
7403025 Membrane probing system Paul A. Tervo, Kenneth R. Smith, Mike P. Dauphinais, Martin Koxxy 2008-07-22 $411,000
7323895 Low-current pogo probe card Paul A. Tervo 2008-01-29 $890,000
7295025 Probe station with low noise characteristics Timothy Lesher, Brad Miller, Michael E. Simmons, Frank Gray, Cynthia McDonald 2007-11-13 $836,000
7292057 Probe station thermal chuck with shielding for capacitive current Paul A. Tervo, John Dunklee 2007-11-06 $730,000
7250779 Probe station with low inductance path John Dunklee 2007-07-31 $236,000
7148711 Membrane probing system Paul A. Tervo, Kenneth R. Smith, Mike P. Dauphinais, Martin Koxxy 2006-12-12 $479,000
7148714 POGO probe card for low current measurements Paul A. Tervo 2006-12-12 $479,000
7138810 Probe station with low noise characteristics Timothy Lesher, Brad Miller, Michael E. Simmons, Frank Gray, Cynthia McDonald 2006-11-21 $494,000
7138813 Probe station thermal chuck with shielding for capacitive current Paul A. Tervo, John Dunklee 2006-11-21 $494,000
7068057 Low-current pogo probe card Paul A. Tervo 2006-06-27 $1,129,000
7042241 Low-current pogo probe card Paul A. Tervo 2006-05-09 $1,370,000
6930498 Membrane probing system Paul A. Tervo, Kenneth R. Smith, Mike P. Dauphinais, Martin Koxxy 2005-08-16 $1,966,000
6856153 Low-current pogo probe card Paul A. Tervo 2005-02-15 $1,465,000
6847219 Probe station with low noise characteristics Timothy Lesher, Brad Miller, Michael E. Simmons, Frank Gray, Cynthia McDonald 2005-01-25 $1,251,000
6838890 Membrane probing system Paul A. Tervo, Kenneth R. Smith, Mike P. Dauphinais, Martin Koxxy 2005-01-04
6822467 Low-current pogo probe card Paul A. Tervo 2004-11-23
6642732 Probe station thermal chuck with shielding for capacitive current Paul A. Tervo, John Dunklee 2003-11-04
6559668 Low-current pogo probe card Paul A. Tervo 2003-05-06
6512391 Probe station thermal chuck with shielding for capacitive current Paul A. Tervo, John Dunklee 2003-01-28
6445202 Probe station thermal chuck with shielding for capacitive current Paul A. Tervo, John Dunklee 2002-09-03
6034533 Low-current pogo probe card Paul A. Tervo 2000-03-07
4862020 Electronic delay control circuit having pulse width maintenance Ronald Kurt Christensen 1989-08-29 $456,000