Inventor · disambiguated record
Tetsuji Hayakawa
Also filed as: HAYAKAWA TETSUJI
3 granted patents·150 citations·filing 1986–1991
77Inventor score
Technology areasH01F
Top patents by PatentIndex Score
3 records- 0196US4837114AProcess for producing magnets having improved corrosion resistanceSUMITOMO SPEC METALS·Filed 1986·Granted Jun 6, 1989·82 cites·45 claims
- 0288US5316595AProcess for producing magnets having improved corrosion resistanceSUMITOMO SPEC METALS·Filed 1991·Granted May 31, 1994·44 cites·8 claims
- 0379US5089066AMagnets having improved corrosion resistanceSUMITOMO SPEICAL METALS CO LTD·Filed 1989·Granted Feb 18, 1992·24 cites·12 claims
Join the waitlist — get patent alerts
Get an alert when Tetsuji Hayakawa 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 →