Inventor · disambiguated record
Helmut Hetzel
Also filed as: HETZEL HELMUT
3 granted patents·44 citations·filing 1986–1987
71Inventor score
Files withZAHNRADFABRIK FRIEDRICHSHAFEN3
Top patents by PatentIndex Score
3 records- 0170US4848402ARotary slide valve for hydraulic auxiliary power steeringsZAHNRADFABRIK FRIEDRICHSHAFEN·Filed 1986·Granted Jul 18, 1989·27 cites·7 claims
- 0243US5086687ARotary slide valve for hydraulic auxiliary power steeringZAHNRADFABRIK FRIEDRICHSHAFEN·Filed 1987·Granted Feb 11, 1992·9 cites·8 claims
- 0339US5107752ARotary gate valve for hydraulic servo-assisted steering systemsZAHNRADFABRIK FRIEDRICHSHAFEN·Filed 1987·Granted Apr 28, 1992·8 cites·9 claims
Join the waitlist — get patent alerts
Get an alert when Helmut Hetzel 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 →