Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Stephen Spence — 1 Patent

IHIhi: 1 patents #624 of 1,178Top 55%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
Stephen Spence has been granted 1 US patent while listed as an inventor at Ihi. All of these patents were granted in 2023. Stephen Spence ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Stephen Spence in Coagh, GB.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11821339 Turbocharger Isao Morita, Richard Morrison 2023-11-21