Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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James Spence — 4 Patents

IBM: 1 patents #44,878 of 70,183Top 65%
Markham, CA: #408 of 1,673 inventorsTop 25%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
James Spence has been granted 4 US patents while listed as an inventor at IBM. The first was granted in 1991 and the most recent in October 2007. James Spence ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list James Spence in Markham, ON, CA.

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7284641 Wheel locking system 2007-10-23
5445120 Device to prevent automobile starter engagement when engine is running 1995-08-29
5169132 Workpiece handler Charles Myers 1992-12-08 $8,349,000
5007557 Spill container with unfolding flexible compartment 1991-04-16