Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
DC

David J. Chapman — 19 Patents

Delphi Technologies: 7 patents #426 of 4,124Top 15%
JUJds Uniphase: 5 patents #90 of 940Top 10%
General Motors: 3 patents #4,723 of 18,328Top 30%
FSFreeescale Semiconductor: 1 patents #2,021 of 3,767Top 55%
LOLumentum Operations: 1 patents #171 of 299Top 60%
San Jose, CA: #3,451 of 32,062 inventorsTop 15%
California: #31,067 of 386,348 inventorsTop 9%
Overall (All Time): #229,345 of 4,157,543Top 6%
19 Patents All Time
David J. Chapman has been granted 19 US patents while listed as an inventor at Delphi Technologies. The first was granted in 1989 and the most recent in March 2016. David J. Chapman ranks #229,345 of 4,157,543 US inventors in our database (top 5.5%). Patent records list David J. Chapman in San Jose, CA, US.

Patents per Year

Patents granted per year, 1989 to 2016Bar chart with a peak of 4 patents in 2002.peak 41989: 1 patents19891996: 1 patents1999: 1 patents19992000: 2 patents2002: 4 patents20022003: 3 patents2004: 1 patents20042006: 1 patents2010: 1 patents20102012: 2 patents2015: 1 patents20152016: 1 patents2016

Issued Patents All Time

Showing 1–19 of 19 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
9285538 Reducing temperature drift of an arrayed waveguide grating Jinxi Shen, Barthelemy Fondeur, Wenlin Jin, Niki Liu 2016-03-15
8983244 Optical interferometer Jinxi Shen, Hiroaki Yamada, Shanrui Ren 2015-03-17 $24,478,000
8340523 Tunable optical filter Jinxi Shen, Jyoti Kiron Bhardwaj, Barthelemy Fondeur, Douglas E. Crafts, Robert J. Brainard +1 more 2012-12-25
8213752 Coherent optical mixer and a method of coherent detection of light David J. Dougherty 2012-07-03
7861200 Setup and hold time characterization device and method Yifeng Yang, Yun Zhang, Yibin Xia 2010-12-28
7077773 Drive assembly with dynamic tensioning device John R. Rice 2006-07-18
6697553 Compact, low insertion loss, high yield arrayed waveguide grating Jyoti Kiron Bhardwaj, Robert J. Brainard, Douglas E. Crafts, Zi-Wen Dong, David J. Dougherty +13 more 2004-02-24 $40,480,000
6606425 Transfer molded packages with embedded thermal insulation Douglas E. Crafts, Kenzo Ishida, Duane Cook, James F. Farrell, Suresh Ramalingam +1 more 2003-08-12 $18,422,000
6583388 High thermal efficiency, small form-factor packages including thermally insulative cavities, and transfer molded variants Douglas E. Crafts, Steven M. Swain 2003-06-24 $103,668,000
6561569 Drive mechanism for power operated slideable side door Bruce J. Risdon, David A. Sedlak 2003-05-13 $1,982,000
6450061 Adjustable pedal system with misalignment sensor Waldemar Wawrzyniec Gmurowski 2002-09-17 $5,195,000
6405486 Vehicle liftgate power operating system Lloyd Walker Rogers, Jr., Brian Orr, Joseph M. Johnson 2002-06-18 $2,215,000
6390535 Sliding door closure apparatus 2002-05-21 $2,216,000
6341809 Liftgate counterbalance system 2002-01-29 $11,013,000
6161894 Flexible electric cable for sliding vehicle door 2000-12-19 $13,329,000
6018912 Vehicle liftgate counter balance system Robert Wayne Baughman, Michael Antonio Ciavaglia 2000-02-01
5896703 Power liftgate cable drive Kevin Wright, William L. Priest, Howard W. Kuhlman, Robert Wayne Baughman, Craig Blanchard 1999-04-27
5588258 Power operator for pivotable vehicle closure element Kevin Wright, Lloyd Walker Rogers, Jr., Robert Wayne Baughman 1996-12-31
4871309 Apparatus for preparing samples 1989-10-03