Inventor · disambiguated record
Roger Sprankle
Also filed as: SPRANKLE ROGER S
1 granted patent·2 pending applications·22 citations·filing 1975–2005
41Inventor score
Top patents by PatentIndex Score
3 records- 0169US3977818AThrottling means for geothermal streamsHYDROTHERMAL POWER CO LTD·Filed 1975·Granted Aug 31, 1976·22 cites·8 claims
- 0232US2006196184A1Helical screw expander for power production from solar, geothermal, and industrial processesSPRANKLE ROGER S·Filed 2005·Application pending·0 cites
- 0326US2002165072A1Gymnastic tilted rotating tableFiled 2001·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Roger Sprankle files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →