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USPTO Patent Rankings Data through Dec 31, 2025
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David K. Chen — 15 Patents

Delphi Technologies: 7 patents #426 of 4,124Top 15%
General Motors: 4 patents #3,757 of 18,328Top 25%
Ford: 2 patents #6,478 of 17,473Top 40%
SESeh-America: 1 patents #69 of 140Top 50%
Kla-Tencor: 1 patents #1,853 of 2,049Top 95%
Rochester Hills, MI: #146 of 1,754 inventorsTop 9%
Michigan: #5,942 of 86,293 inventorsTop 7%
Overall (All Time): #307,048 of 4,157,543Top 8%
15 Patents All Time
David K. Chen has been granted 15 US patents while listed as an inventor at Delphi Technologies. The first was granted in 1995 and the most recent in July 2014. David K. Chen ranks #307,048 of 4,157,543 US inventors in our database (top 7.4%). Patent records list David K. Chen in Rochester Hills, MI, US.

Issued Patents All Time

Showing 1–15 of 15 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
8769935 System and method for monitoring reductant quality Furqan Zafar Shaikh, John Paul Bogema, Michiel J. Van Nieuwstadt, Scott Cooper, Garry Anthony Zawacki +4 more 2014-07-08 $14,553,000
8141346 System and method for monitoring reductant quality Furqan Zafar Shaikh, John Paul Bogema, Michiel J. Van Nieuwstadt, Scott Cooper, Garry Anthony Zawacki +4 more 2012-03-27 $15,893,000
7528944 Methods and systems for detecting pinholes in a film formed on a wafer or for monitoring a thermal process tool Andrew J. Steinbach, Daniel Kavaldjiev, Alexander Belyaev, Juergen Reich 2009-05-05 $11,119,000
7279133 Planar sensor and a method for measuring the temperature of same David Wallace, Da Yu Wang, Walter T. Symons, Paul Kikuchi, Yingjie Lin +3 more 2007-10-09
7196009 Lapping carrier, apparatus for lapping a wafer and method of fabricating a lapping carrier Brian L. Bex 2007-03-27 $277,000
7069770 Ammonia sensor element, heater, and method for making the same Raymond L. Bloink, Carlos A. Valdes, Eric Ker, Jinping Zhang 2006-07-04
7048844 Gas sensor and method for use thereof Da Yu Wang, Yingjie Lin, Raymond L. Bloink, Devesh Srivastava, Walter T. Symons +1 more 2006-05-23
6979892 Laminated co-fired sandwiched element for non-thermal plasma reactor Bob Li, Joachim Kupe, David Emil Nelson 2005-12-27
6957564 Impact protection of an exhaust sensor Charles Scott Nelson, Mark R. McClanahan, Russell Bosch 2005-10-25
6638416 Hydrogen sensing process Da Yu Wang, Kaius K. Polikarpus, Walter T. Symons 2003-10-28 $1,083,000
6562215 Planar exhaust sensor element with enhanced geometry Charles Scott Nelson, Lora Younkman, Raymond L. Bloink, Kaius K. Polikarpus, Walter T. Symons 2003-05-13 $1,982,000
6144015 Glow sensor--ceramic flat plate Randolph Kwok-Kin Chiu 2000-11-07
6062185 Glow sensor and engine component combination Randolph Kwok-Kin Chiu, Charles D. Oakley, Joseph Michael Leptich, Gamdur S. Mann 2000-05-16
5909916 Method of making a catalytic converter Michael R. Foster, Gerald Leroy Vaneman, Jesse Allan Heather, Dana M. Serrels 1999-06-08
5467636 Flat plate sensor with a robust package design David A. Thompson, Venkatesh Rajagopalan, Kurt W. Wright, John J. Sterba, William John Paulus +2 more 1995-11-21