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

James Carl — 3 Patents

IRIrobot: 1 patents #348 of 480Top 75%
Littleton, MA: #151 of 347 inventorsTop 45%
Massachusetts: #33,867 of 88,656 inventorsTop 40%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
James Carl has been granted 3 US patents while listed as an inventor at Irobot. The first was granted in 1993 and the most recent in June 2015. James Carl ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list James Carl in Littleton, MA, US.

Patents per Year

Patents granted per year, 1993 to 2015Bar chart with a peak of 1 patents in 1993.peak 11993: 1 patents19931994: 1 patents19942015: 1 patents2015

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
9045049 System and method for in situ charging of a remote vehicle Daniel D. Hershey, Victory Fay, Robert W. Connors 2015-06-02 $2,645,000
5309458 Method and apparatus for stabilizing laser diode energy output 1994-05-03
5235263 Method and apparatus for correcting hysteresis synchronous motor hunting W. Thomas Boston, John Connolly 1993-08-10