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USPTO Patent Rankings Data through Dec 31, 2025
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John N. Pierce — 5 Patents

SISignatron: 3 patents #2 of 8Top 25%
SUSundstrand: 1 patents #357 of 697Top 55%
UFUS Air Force: 1 patents #6,232 of 16,312Top 40%
Lexington, MA: #844 of 2,299 inventorsTop 40%
Massachusetts: #23,696 of 88,656 inventorsTop 30%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
John N. Pierce has been granted 5 US patents while listed as an inventor at Signatron. The first was granted in 1987 and the most recent in January 1993. John N. Pierce ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list John N. Pierce in Lexington, MA, US.

Patents per Year

Patents granted per year, 1987 to 1993Bar chart with a peak of 2 patents in 1988.peak 21987: 1 patents19871988: 2 patents19881990: 1 patents19901993: 1 patents1993

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5179575 Tracking algorithm for equalizers following variable gain circuitry by George R. Letteney, executor 1993-01-12 $2,147,000
4893128 Troposcatter diversity sidelobe jamming suppressor Steen A. Parl 1990-01-09
4783660 Signal source distortion compensator 1988-11-08 $1,011,000
4737928 High accuracy random channel reproducing simulator Steen A. Parl 1988-04-12 $3,969,000
4670885 Spread spectrum adaptive antenna interference canceller Steen A. Parl 1987-06-02 $1,215,000