Inventor · disambiguated record

Yasuhiko Hamakawa

Also filed as: HAMAKAWA YASUHIKO

1 granted patent·20 citations·filing 2001–2001

39Inventor score

Technology areasH05B

Files withSEKISUI JUSHI KK1

Top patents by PatentIndex Score

1 record

0166US6726398B2Road sign device and spontaneously emitted light sign system used for the deviceSEKISUI JUSHI KK·Filed 2001·Granted Apr 27, 2004·20 cites·15 claims

Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →