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USPTO Patent Rankings Data through Dec 31, 2025
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John E. Ahearn — 2 Patents

ISIsotronics: 2 patents #4 of 14Top 30%
Bridgewater, MA: #79 of 199 inventorsTop 40%
Massachusetts: #42,563 of 88,656 inventorsTop 50%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
John E. Ahearn has been granted 2 US patents while listed as an inventor at Isotronics. The first was granted in 1987 and the most recent in November 1988. John E. Ahearn ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list John E. Ahearn in Bridgewater, MA, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
4788382 Duplex glass preforms for hermetic glass-to-metal compression sealing Raymond A. Frates, Dennis Girard, Richard A. Koepke, Robert M. O'Hern, James K. Schmidt +1 more 1988-11-29 $1,589,000
4716082 Duplex glass preforms for hermetic glass-to-metal sealing Raymond A. Frates, Dennis Girard, Richard A. Koepke, James K. Schmidt, C. Dodd Manon 1987-12-29 $3,363,000