Allan H. Stephan has been granted 8 US patents while listed as an inventor at Microsoft . The first was granted in 1988 and the most recent in May 2025. Allan H. Stephan ranks #600,572 of 4,157,543 US inventors in our database (top 14.4%). Patent records list Allan H. Stephan in Seattle, WA, US.
Patents per Year Patents granted per year, 1988 to 2025 Bar chart with a peak of 2 patents in 1993. peak 2 1988: 1 patents 1988 1992: 1 patents 1992 1993: 2 patents 1993 1994: 2 patents 1994 1998: 1 patents 1998 2025: 1 patents 2025
Issued Patents All Time
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Showing 1–8 of 8 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
12296129 Systems and methods for improved pain relief from stimulation of thermal fibers Charles Chabal , Peter J. Dunbar , Jack H. Profit 2025-05-13
5748185 Touchpad with scroll and pan regions Brent LaPorte , Stephen B. Powers , Mark McNeely 1998-05-05
D353370 Computer trackball Stuart Ashmun , Charlie Garthwaite , Bridget Cameron , Michael D. Nelson , Mike M. Paull +3 more 1994-12-13
5281958 Pointing device with adjustable clamp attachable to a keyboard Stuart Ashmun , Charlie Garthwaite , Bridget Cameron , Michael D. Nelson , Mike M. Paull +3 more 1994-01-25
$153,172,000
D342241 Computer trackball Stuart Ashmun , Charlie Garthwaite , Bridget Cameron , Michael D. Nelson , Mike M. Paull +3 more 1993-12-14
5187468 Pointing device with adjustable clamp attachable to a keyboard Charlie Garthwaite , Bridget Cameron , Stuart Ashmun , Michael D. Nelson 1993-02-16
$169,182,000
D326261 Trackball for computer Stuart Ashmun , Charlie Garthwaite , Bridget Cameron , Michael D. Nelson , Mike M. Paull +3 more 1992-05-19
D299014 Portable multimeter Michael D. Nelson 1988-12-20
