Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Thomas G. Duff — 3 Patents

ATAT&T: 1 patents #10,636 of 18,772Top 60%
Brielle, NJ: #10 of 35 inventorsTop 30%
New Jersey: #23,671 of 69,400 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Thomas G. Duff has been granted 3 US patents while listed as an inventor at AT&T. The first was granted in 1984 and the most recent in June 2017. Thomas G. Duff ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Thomas G. Duff in Brielle, NJ, US.

Patents per Year

Patents granted per year, 1984 to 2017Bar chart with a peak of 1 patents in 1984.peak 11984: 1 patents19842016: 1 patents20162017: 1 patents2017

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
9682849 Stepless ladder assembly and methods of utilizing same 2017-06-20
9279288 Stepless ladder assembly and methods of utilizing same 2016-03-08
4485440 Central processor utilization monitor Chester S. Zaluk 1984-11-27