Inventor · disambiguated record
Johannes Hartfiel
Also filed as: HARTFIEL JOHANNES
2 granted patents·1 pending application·41 citations·filing 1987–2022
63Inventor score
Top patents by PatentIndex Score
3 records- 0167US4911192AMethod of and apparatus for control of saftey valvesHARTFIEL JOHANNES·Filed 1987·Granted Mar 27, 1990·29 cites·17 claims
- 0258US2023002252A1Method for optical activation of the sensor surface, in particular for zero chlorine sensorsPROMINENT GMBH·Filed 2022·Application pending·0 cites
- 0338US5214964AMethod of and apparatus for measuring fixed amounts of fluid in a pulsating fluid streamPROMINENT DOSIERTECHNIK GMBH·Filed 1991·Granted Jun 1, 1993·12 cites·30 claims
Join the waitlist — get patent alerts
Get an alert when Johannes Hartfiel 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 →