Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Stephen E. Clarke — 7 Patents

Ford: 3 patents #4,990 of 17,473Top 30%
SPSmithkline Beeacham P.L.C.: 2 patents #217 of 690Top 35%
ATAgilent Technologies: 1 patents #1,723 of 3,411Top 55%
SBSmithkline Beecham-Spa: 1 patents #9 of 18Top 50%
General Motors: 1 patents #9,441 of 18,328Top 55%
Dayton, OH: #261 of 1,892 inventorsTop 15%
Ohio: #11,780 of 73,341 inventorsTop 20%
Overall (All Time): #680,018 of 4,157,543Top 20%
7 Patents All Time
Stephen E. Clarke has been granted 7 US patents while listed as an inventor at Ford. The first was granted in 1981 and the most recent in February 2004. Stephen E. Clarke ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list Stephen E. Clarke in Dayton, OH, US.

Patents per Year

Patents granted per year, 1981 to 2004Bar chart with a peak of 2 patents in 1989.peak 21981: 1 patents19811986: 1 patents19861989: 2 patents19892000: 1 patents20002003: 1 patents20032004: 1 patents2004

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6696457 Morphinoid compounds Giulio Dondio, Luca Raveglia, Silvano Ronzoni 2004-02-24
6617124 7-alkoxycoumarins as cytochrome p450 substrates 2003-09-09
6118169 Method for increasing power supply bypassing while decreasing chip layer density variations Paul D Nuber, Dan Stotz, M. Jason Welch, Guy Humphrey, C. Stephen Dondale 2000-09-12 $93,618,000
4844845 Dry mixture for production of pre-formed propellant charge James D. Hendry 1989-07-04
4802415 Telescoped ammunition round having subcaliber projectile sabot with integral piston James D. Hendry, Ernest R. Mijares 1989-02-07 $18,080,000
4604954 Telescoped ammunition with dual split cartridge case James D. Hendry, Ernest R. Mijares 1986-08-12 $26,735,000
4265348 Electro-viscous fan clutch with snap action spring valve element for control of fluid gate 1981-05-05 $10,878,000