Inventor · disambiguated record
Keigo Naoi
Also filed as: NAOI KEIGO
5 granted patents·324 citations·filing 1979–1993
84Inventor score
Files withHITACHI LTD5
Top patents by PatentIndex Score
5 records- 0197US5355749AControl apparatus and control method for motor drive vehicleHITACHI LTD·Filed 1992·Granted Oct 18, 1994·214 cites·13 claims
- 0284US4232238ARectifier assembly for AC generators for use with vehiclesHITACHI LTD·Filed 1979·Granted Nov 4, 1980·51 cites·4 claims
- 0373US4563631AVoltage regulator for charging generatorHITACHI LTD·Filed 1984·Granted Jan 7, 1986·24 cites·9 claims
- 0467US5404717AMethod and system for controlling internal combustion engine with air pumpHITACHI LTD·Filed 1993·Granted Apr 11, 1995·25 cites·37 claims
- 0533US4760323AVoltage regulator for generatorHITACHI LTD·Filed 1985·Granted Jul 26, 1988·10 cites·5 claims
Join the waitlist — get patent alerts
Get an alert when Keigo Naoi 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 →