Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Douglas Schaefer — 9 Patents

Visa: 4 patents #470 of 2,009Top 25%
WMWatlow Electric Manufacturing: 3 patents #98 of 233Top 45%
KOKohler: 1 patents #682 of 998Top 70%
Chesterfield, MO: #698 of 6,461 inventorsTop 15%
Missouri: #2,375 of 23,789 inventorsTop 10%
Overall (All Time): #535,341 of 4,157,543Top 15%
9 Patents All Time
Douglas Schaefer has been granted 9 US patents while listed as an inventor at Visa. The first was granted in 2000 and the most recent in January 2025. Douglas Schaefer ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list Douglas Schaefer in Chesterfield, MO, US.

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
12200824 Modular heater assembly with interchangeable auxiliary sensing junctions Jeremy Ohse, Eric Ellis 2025-01-14
11540358 Modular heater assembly with interchangeable auxiliary sensing junctions Jeremy Ohse, Eric Ellis 2022-12-27
11096248 Resistive heater with temperature sensing power pins and auxiliary sensing junction Terry COLHOUR, Jeremy Ohse, Jacob Burnia, Eric Ellis, Louis P. Steinhauser 2021-08-17
D725817 Light fixture 2015-03-31
D445941 Lighting fixture Andrew W. Shabica, Glen Gorsiski 2001-07-31
D442314 Lighting fixture Andrew W. Shabica, Glen Gorsiski 2001-05-15
D442315 Lighting fixture Andrew W. Shabica, Glen Gorsiski 2001-05-15
D441483 Lighting fixture Andrew W. Shabica, Glen Gorsiski 2001-05-01
D422341 Faucet body Erich D. Slothower 2000-04-04