Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Craig Hammann Stephan — 35 Patents

Ford: 34 patents #437 of 17,473Top 3%
Xerox: 1 patents #5,237 of 8,622Top 65%
Fairport, NY: #43 of 1,225 inventorsTop 4%
New York: #3,219 of 115,490 inventorsTop 3%
Overall (All Time): #99,268 of 4,157,543Top 3%
35 Patents All Time

Issued Patents All Time

Showing 26–35 of 35 patents

Patent #TitleCo-InventorsDate
5730091 Soft landing electromechanically actuated engine valve Roy E. Diehl, Feng Liang, John Michael Miller, Xingyi Xu 1998-03-24
5692463 Electromechanically actuated valve with multiple lifts Feng Liang 1997-12-02
5647311 Electromechanically actuated valve with multiple lifts and soft landing Feng Liang 1997-07-15
5645019 Electromechanically actuated valve with soft landing and consistent seating force Feng Liang 1997-07-08
5584174 Power turbine flywheel assembly for a dual shaft turbine engine Bradford Bates, Richard C. Belaire 1996-12-17
5488864 Torsion beam accelerometer with slotted tilt plate 1996-02-06
5313832 Composite mass air flow sensor Margherita Zanini-Fisher 1994-05-24
5231878 Mass air flow sensor Margherita Zanini-Fisher 1993-08-03
5220835 Torsion beam accelerometer 1993-06-22
4331754 Self-spacing touchdown development method 1982-05-25