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USPTO Patent Rankings Data through Dec 31, 2025
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John Pfeifer — 13 Patents

FIFiskars: 2 patents #38 of 81Top 50%
M&Markson Rosenthal &: 1 patents #2 of 5Top 40%
UNUnknown: 1 patents #29,356 of 83,584Top 40%
Kirkwood, MO: #22 of 290 inventorsTop 8%
Missouri: #1,459 of 23,789 inventorsTop 7%
Overall (All Time): #362,438 of 4,157,543Top 9%
13 Patents All Time
John Pfeifer has been granted 13 US patents while listed as an inventor at Fiskars. The first was granted in 1995 and the most recent in October 2023. John Pfeifer ranks #362,438 of 4,157,543 US inventors in our database (top 8.7%). Patent records list John Pfeifer in Kirkwood, MO, US.

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDate
11786799 Snow ski assemblies Michael C. Marner 2023-10-17
D994812 Snow ski Michael C. Marner 2023-08-08
11007421 Snow ski assemblies Michael C. Marner 2021-05-18
D882009 Snow ski Michael C. Marner 2020-04-21
9950241 Snow ski assemblies Michael C. Marner 2018-04-24
6768549 Ampoule analyzer apparatus Peter E. Rising 2004-07-27
6762842 Light analyzer apparatus William Frederick, Alvaro Dedios 2004-07-13
6493085 Light analyzer apparatus William Frederick, Alvaro Dedios, Stephen C. Fog 2002-12-10
6444462 Incubation system for an analyzer apparatus William Frederick, Alvaro Dedios 2002-09-03
6087815 Portable power system using DC to DC converter James C. Boda, David Michael Hoerr 2000-07-11
5929597 Portable electrical power system to supply direct current voltage James C. Boda 1999-07-27
5716128 Power takeoff and lighting unit for fluorescent fixture Gregory Clark, Neil M. Brown, Kenneth Galer 1998-02-10
5398019 Portable sensor for detecting bends of the back of a person past a predetermined lumbosacral angle Larry W. Barnett 1995-03-14