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USPTO Patent Rankings Data through Dec 31, 2025
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David Robert Spring — 4 Patents

AGAgrimetis: 2 patents #4 of 7Top 60%
CLCambridge Enterprise Limited: 2 patents #121 of 688Top 20%
Astrazeneca Ab: 1 patents #1,022 of 1,971Top 55%
Pidley, GB: #37 of 94 inventorsTop 40%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
David Robert Spring has been granted 4 US patents while listed as an inventor at Agrimetis. The first was granted in 2020 and the most recent in August 2025. David Robert Spring ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list David Robert Spring in Pidley, GB.

Patents per Year

Patents granted per year, 2020 to 2025Bar chart with a peak of 2 patents in 2020.peak 22020: 2 patents20202024: 1 patents20242025: 1 patents2025

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
12377164 Linkers and conjugates Jeremy Stephen Parker, Hannah Fiona Sore, Stephen James Walsh 2025-08-05
11866436 Benzo[c][2,6]naphthyridine derivatives, compositions and therapeutic uses thereof Marko Juhana Hyvonen, Paul Brear, Paul Alan Glossop 2024-01-09
10717756 Spinosyn derivatives as insecticides Andrew Antony Calabrese, Brian Michael Green, Jerome Yves Cassayre, Pasquale N. Confalone 2020-07-21
10711026 Spinosyn derivatives as insecticides Andrew Antony Calabrese, Brian Michael Green, Jerome Yves Cassayre, Pasquale N. Confalone 2020-07-14

Frequent Collaborators

Andrew Antony Calabrese2 shared
Pasquale N. Confalone2 shared
Brian Michael Green2 shared
Jerome Yves Cassayre2 shared
Stephen James Walsh1 shared
Paul Brear1 shared

Nearby-Ranked Inventors

Jagadeesh Kandasamy4
Ross CABOT4
George Ueda4
Franz A. Gruswitz4
Tommy Glimberg4
Vinayakaraddy Gulabal4
Sandra Bittorf4
Aviel FOGEL4
Eric Matthew Walton4