Inventor · disambiguated record
Masao Ohyama
Also filed as: OHYAMA MASAO
15 granted patents·170 citations·filing 1984–1997
93Inventor score
Technology areasG11B
Files withSONY CORP15
Top patents by PatentIndex Score
15 records- 0181US4641210AMagnetic recording and reproducing apparatusSONY CORP·Filed 1984·Granted Feb 3, 1987·24 cites·9 claims
- 0280US4799117AMagnetic tape cassette loading system in recording and/or reproducing apparatusSONY CORP·Filed 1986·Granted Jan 17, 1989·23 cites·25 claims
- 0375US4685008AMagnetic recording and/or reproducing apparatus with tape loading and reel braking mechanisms which are controlled in commonSONY CORP·Filed 1985·Granted Aug 4, 1987·23 cites·9 claims
- 0473US5995467ADisc recording and/or reproducing apparatus with a liftable optical pickup apparatus and coordinated lens shutterSONY CORP·Filed 1997·Granted Nov 30, 1999·26 cites·18 claims
- 0570US4935895AMagnetic tape cassette loading system in recording and/or reproducing apparatusSONY CORP·Filed 1988·Granted Jun 19, 1990·15 cites·13 claims
- 0666US4881137AMagnetic tape cassette with tape protective closure and lock mechanismSONY CORP·Filed 1988·Granted Nov 14, 1989·11 cites·29 claims
- 0755US4908723ACompact recording and/or reproducing apparatus with oblique rotary headSONY CORP·Filed 1986·Granted Mar 13, 1990·11 cites·41 claims
- 0848US4694360ATape cassette with concave engagement portion and player with hook engageable therewithSONY CORP·Filed 1985·Granted Sep 15, 1987·6 cites·5 claims
- 0946USRE34927EMagnetic tape cassette with tape protective closure and lock mechanismSONY CORP·Filed 1994·Granted May 2, 1995·5 cites·30 claims
- 1046US4843510AMagnetic tape cassette with tape protective closure and lock mechanismSONY CORP·Filed 1985·Granted Jun 27, 1989·5 cites·24 claims
- 1145US4816953ATape cassette with groove engageable with loading hookSONY CORP·Filed 1988·Granted Mar 28, 1989·5 cites·3 claims
- 1240US5126909ASlider lock braking mechanism for setting modes in tape playerSONY CORP·Filed 1991·Granted Jun 30, 1992·5 cites·11 claims
- 1339US5835317ACleaning device for magnetic tape recording and/or reproducing apparatusSONY CORP·Filed 1996·Granted Nov 10, 1998·4 cites·8 claims
- 1434US5162956ACassette holder assembly having multiple projections differentiated in dimensionSONY CORP·Filed 1990·Granted Nov 10, 1992·4 cites·5 claims
- 1534US4777546ACassette-type magnetic tape recording and/or reproducing apparatus with single motor for tape loading and unloading and for pinch roller actuationSONY CORP·Filed 1986·Granted Oct 11, 1988·3 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →