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USPTO Patent Rankings Data through Dec 31, 2025
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Mark R. Schaefer — 3 Patents

SISnap-On Incorporated: 3 patents #191 of 458Top 45%
Greendale, WI: #47 of 157 inventorsTop 30%
Wisconsin: #13,370 of 40,088 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Mark R. Schaefer has been granted 3 US patents. The first was granted in 2001 and the most recent in May 2005. Mark R. Schaefer ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Mark R. Schaefer in Greendale, WI, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6888341 Dual voltage circuit tester Robert D. Johnson, Daniel Mieczkowski 2005-05-03 $9,210,000
D465895 Cart-housing for automotive service equipment Dean P. Pfefferle, Anwar Suharno, Craig F. Govekar, Michael M. Meeker, Larry G. Moller 2002-11-19
D445703 Quick system tester Bruce William Gaunt 2001-07-31