Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
DS

David Schoon

SCSchoonscan: 8 patents #1 of 1Top 100%
3M: 7 patents #2,212 of 11,543Top 20%
HSHaier Us Appliance Solutions: 6 patents #150 of 889Top 20%
GE: 4 patents #8,224 of 36,430Top 25%
PRPrintware: 4 patents #1 of 9Top 15%
ATActive Protective Technologies: 3 patents #1 of 8Top 15%
MFMoskowitz Family: 2 patents #6 of 10Top 60%
ZMZsx Medical: 1 patents #8 of 19Top 45%
Stow, MA: #8 of 318 inventorsTop 3%
Massachusetts: #2,373 of 88,656 inventorsTop 3%
Overall (All Time): #95,453 of 4,157,543Top 3%
35 Patents All Time

Issued Patents All Time

Showing 26–35 of 35 patents

Patent #TitleCo-InventorsDate
4857904 Combination of transition-encoded font information for generation of superimposed font images 1989-08-15
4847607 Image generation from transition-encoded font information 1989-07-11
4686363 Self-resonant scanner biasing system 1987-08-11
4683551 Ram clock switching circuitry for a laser beam printer 1987-07-28
4631726 Laser diode control circuitry 1986-12-23
4630223 Scanner amplitude stabilization system 1986-12-16
4586057 Compensation circuitry for a laser printer using a self-resonant scanner 1986-04-29
4571623 Data clocking circuitry 1986-02-18
4541061 Data clocking circuitry for a scanning apparatus 1985-09-10
4242565 Thermal print head 1980-12-30