Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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John V. Spohnheimer — 4 Patents

DSD3 Semiconductor: 2 patents #4 of 4Top 100%
MOMostek: 2 patents #16 of 83Top 20%
Carrollton, TX: #308 of 1,041 inventorsTop 30%
Texas: #33,915 of 125,132 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
John V. Spohnheimer has been granted 4 US patents while listed as an inventor at D3 Semiconductor. The first was granted in 1982 and the most recent in November 2018. John V. Spohnheimer ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list John V. Spohnheimer in Carrollton, TX, US.

Patents per Year

Patents granted per year, 1982 to 2018Bar chart with a peak of 1 patents in 1982.peak 11982: 1 patents19821983: 1 patents19832017: 1 patents20172018: 1 patents2018

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
10134890 Termination region architecture for vertical power transistors Thomas E. Harrington, III, Zhijun Qu 2018-11-20
9806186 Termination region architecture for vertical power transistors Thomas E. Harrington, III, Zhijun Qu 2017-10-31
4406949 Method and apparatus for aligning an integrated circuit 1983-09-27
4358659 Method and apparatus for focusing a laser beam on an integrated circuit 1982-11-09