Inventor · disambiguated record

Hirobumi Ishikawa

Also filed as: ISHIKAWA HIROBUMI

2 granted patents·15 citations·filing 1987–1995

56Inventor score

Technology areasB65B C08G

Files withSTARCK H C INC1 TOTO KASEI KK1

Top patents by PatentIndex Score

2 records

0157US4728723AProcess for purification of polyphenylene-sulfideTOTO KASEI KK·Filed 1987·Granted Mar 1, 1988·13 cites·6 claims
0225US6079186AMethod of making vacuum-packaged, capacitor-grade tantalum powderSTARCK H C INC·Filed 1995·Granted Jun 27, 2000·2 cites·1 claims

Join the waitlist — get patent alerts

Get an alert when Hirobumi Ishikawa 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 →