Inventor · disambiguated record

Ryoichi Matsuda

Also filed as: MATSUDA RYOICHI

2 granted patents·40 citations·filing 1974–1975

63Inventor score

Technology areasH04M

Files withNIPPON TELEGRAPH & TELEPHONE2

Top patents by PatentIndex Score

2 records

0173US4002860ATransmitting and receiving apparatusNIPPON TELEGRAPH & TELEPHONE·Filed 1975·Granted Jan 11, 1977·20 cites·9 claims
0270US3952166ALoudspeaking telephone circuitNIPPON TELEGRAPH & TELEPHONE·Filed 1974·Granted Apr 20, 1976·20 cites·13 claims

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