Inventor · disambiguated record

Akiho Doi

Also filed as: DOI AKIHO

2 granted patents·4 citations·filing 1982–1982

45Inventor score

Technology areasH04M

Files withIWATSU ELECTRIC CO LTD2

Top patents by PatentIndex Score

2 records

0125US4502138ASynchronization system for key telephone systemIWATSU ELECTRIC CO LTD·Filed 1982·Granted Feb 26, 1985·3 cites·6 claims
0221US4490820AReception system for key telephone systemIWATSU ELECTRIC CO LTD·Filed 1982·Granted Dec 25, 1984·1 cites·4 claims

Join the waitlist — get patent alerts

Get an alert when Akiho Doi 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 →