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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Robert E. Kellan — 9 Patents

Methuen, MA: #30 of 259 inventorsTop 15%
Massachusetts: #14,291 of 88,656 inventorsTop 20%
Overall (All Time): #535,341 of 4,157,543Top 15%
9 Patents All Time
Robert E. Kellan has been granted 9 US patents. The first was granted in 1994 and the most recent in September 2016. Robert E. Kellan ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list Robert E. Kellan in Methuen, MA, US.

Patents per Year

Patents granted per year, 1994 to 2016Bar chart with a peak of 3 patents in 2001.peak 31994: 2 patents19941998: 1 patents19982001: 3 patents20012013: 2 patents20132016: 1 patents2016

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
9439755 Haptic devices for intraocular lens Wayne B. Callahan, Paul S. Koch, Anna S. Hayes 2016-09-13
8480734 Intraocular lens with accommodation Paul S. Koch 2013-07-09
8377125 Intraocular lens with accommodation 2013-02-19
6261321 Phakic or aphakic intraocular lens assembly 2001-07-17
6241777 Phakic intraocular lenses 2001-06-05
D437587 Computer input device 2001-02-13
5709220 Head stabilizer and superior rectus bridle suture fixator device for use in eye surgery and methods therefor 1998-01-20
5370652 Surgical knife blade for making sutureless incisions in the eye and methods therefor 1994-12-06
5361780 Head stabilizer and superior rectus bridle suture fixator device and drainage device for use in eye surgery and methods therefor 1994-11-08