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USPTO Patent Rankings Data through Dec 31, 2025
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Steven E. Callahan — 8 Patents

MIMicroplas: 7 patents #1 of 9Top 15%
Westborough, MA: #117 of 500 inventorsTop 25%
Massachusetts: #16,020 of 88,656 inventorsTop 20%
Overall (All Time): #600,572 of 4,157,543Top 15%
8 Patents All Time
Steven E. Callahan has been granted 8 US patents while listed as an inventor at Microplas. The first was granted in 1995 and the most recent in September 2016. Steven E. Callahan ranks #600,572 of 4,157,543 US inventors in our database (top 14.4%). Patent records list Steven E. Callahan in Westborough, MA, US.

Patents per Year

Patents granted per year, 1995 to 2016Bar chart with a peak of 2 patents in 1995.peak 21995: 2 patents19951996: 1 patents19961997: 1 patents19971998: 2 patents19981999: 1 patents19992016: 1 patents2016

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
D766734 Flexible pouch with internal structure William T. Fitzsimmons, Isaac Haverlick, Shane Yellin, David G. Honan, Roger R. Fontaine +1 more 2016-09-20
5921521 Copy stand William T. Fitzsimmons 1999-07-13
5775663 Copy Stand William T. Fitzsimmons 1998-07-07
D388605 Card case W. Tyler Fitzsimmons 1998-01-06
5632374 Compact disc transfer station Tyler Fitzsimmons, Todd K. Dyment, Jon A. Noce 1997-05-27
5509731 Ejecting storage case Todd K. Dyment, Anthony L. Gelardi, Tyler Fitzsimmons 1996-04-23
5464091 Protective covers Robert Petit 1995-11-07
5415298 Recorded medium storage case Todd K. Dyment 1995-05-16