Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
SF

Stephen W. Fitzpatrick — 9 Patents

ATAT&T: 2 patents #7,295 of 18,772Top 40%
Framingham, MA: #197 of 1,271 inventorsTop 20%
Massachusetts: #14,291 of 88,656 inventorsTop 20%
Overall (All Time): #535,341 of 4,157,543Top 15%
9 Patents All Time
Stephen W. Fitzpatrick has been granted 9 US patents while listed as an inventor at AT&T. The first was granted in 1990 and the most recent in February 2025. Stephen W. Fitzpatrick ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list Stephen W. Fitzpatrick in Framingham, MA, US.

Patents per Year

Patents granted per year, 1990 to 2025Bar chart with a peak of 2 patents in 2014.peak 21990: 1 patents19901997: 1 patents19972011: 1 patents20112012: 1 patents20122014: 2 patents20142016: 1 patents20162025: 2 patents2025

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12227474 Methods of producing and recovering levulinic acid 2025-02-18
12227486 Systems and methods for the production of levulinic acid, furfural, and formic acid 2025-02-18
9481626 Production of formic acid 2016-11-01
8765998 Production of formic acid 2014-07-01
8631136 Methods, systems, and computer programs for optimizing network performance Gary Tennyson, Fariborz Behi, Trevor Hill, Amir Mehmood Sheikh 2014-01-14 $19,486,000
8138371 Production of formic acid 2012-03-20
8032487 System and method for synchronizing data in a networked system John Ezell, Neil Gilmartin 2011-10-04 $18,962,000
5608105 Production of levulinic acid from carbohydrate-containing materials 1997-03-04
4897497 Lignocellulose degradation to furfural and levulinic acid 1990-01-30