Inventor · disambiguated record
Tsutomu Miyakawa
Also filed as: MIYAKAWA TSUTOMU
12 granted patents·155 citations·filing 1983–2021
92Inventor score
Files withPIONEER ELECTRONIC CORP9HUKUTO MANUFACTURING CO LTD1PIONEER ELECTRIC CORP1SUMITOMO CONSTRUCTION MACHINERY CO LTD1
Top patents by PatentIndex Score
12 records- 0185US4969138AMulti-disk player systemPIONEER ELECTRONIC CORP·Filed 1988·Granted Nov 6, 1990·22 cites·22 claims
- 0285US4730291AMulti-disk player systemPIONEER ELECTRONIC CORP·Filed 1986·Granted Mar 8, 1988·22 cites·7 claims
- 0382US4794580APickup system in optical information recording and reproducing apparatus with damped lead wiresPIONEER ELECTRONIC CORP·Filed 1986·Granted Dec 27, 1988·29 cites·3 claims
- 0481US12030747B2Work machineSUMITOMO CONSTRUCTION MACHINERY CO LTD·Filed 2021·Granted Jul 9, 2024·1 cites·8 claims
- 0580US4788673AMulti-disk player systemPIONEER ELECTRONIC CORP·Filed 1987·Granted Nov 29, 1988·17 cites·6 claims
- 0677US5159585AMulti-disk player system incorporating disk search and disk selection functionsPIONEER ELECTRONIC CORP·Filed 1990·Granted Oct 27, 1992·18 cites·4 claims
- 0769US4811319AMulti-disk player systemPIONEER ELECTRONIC CORP·Filed 1987·Granted Mar 7, 1989·11 cites·3 claims
- 0864US4809252AMulti-disk player systemPIONEER ELECTRONIC CORP·Filed 1986·Granted Feb 28, 1989·13 cites·11 claims
- 0956US4926406ADisk playerPIONEER ELECTRONIC CORP·Filed 1986·Granted May 15, 1990·10 cites·6 claims
- 1047US4539669AFront-loading record playerPIONEER ELECTRIC CORP·Filed 1983·Granted Sep 3, 1985·6 cites·10 claims
- 1131US4754448ADisk player having a clamper aligned with a turntablePIONEER ELECTRONIC CORP·Filed 1986·Granted Jun 28, 1988·3 cites·8 claims
- 1219US5555864AElectric source control device of internal combustion engine drive vehicleHUKUTO MANUFACTURING CO LTD·Filed 1993·Granted Sep 17, 1996·3 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →