Inventor · disambiguated record
Masao Toyosawa
Also filed as: TOYOSAWA MASAO
6 granted patents·512 citations·filing 1977–2000
88Inventor score
Top patents by PatentIndex Score
6 records- 0195US5980261AKaraoke system having host apparatus with customer recordsDAIICHI KOSHO CO LTD·Filed 1997·Granted Nov 9, 1999·300 cites·15 claims
- 0287US4646280AOptical disk record player with fast access timeSONY CORP·Filed 1985·Granted Feb 24, 1987·41 cites·11 claims
- 0381US5900566AKaraoke playback apparatus utilizing digital multi-channel broadcastingDAIICHI KOSHO CO LTD·Filed 1997·Granted May 4, 1999·83 cites·20 claims
- 0479US6077084AKaraoke system and contents storage medium thereforDAIICHI KOSHO CO LTD·Filed 1998·Granted Jun 20, 2000·51 cites·10 claims
- 0578US4098510ARecord playerSONY CORP·Filed 1977·Granted Jul 4, 1978·22 cites·9 claims
- 0669US6139329AKaraoke system and contents storage medium thereforDAIICHI KOSHO CO LTD·Filed 2000·Granted Oct 31, 2000·15 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →