Inventor
OHYAMA MASAO
JP16 patents
⚠️ This page may combine multiple inventors who share the name “OHYAMA MASAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
15 patentsUS5995467ANov 30, 1999
Disc recording and/or reproducing apparatus with a liftable optical pickup apparatus and coordinated lens shutter
SONY CORP26 citations92
US4799117AJan 17, 1989
Magnetic tape cassette loading system in recording and/or reproducing apparatus
SONY CORP23 citations81
US4685008AAug 4, 1987
Magnetic recording and/or reproducing apparatus with tape loading and reel braking mechanisms which are controlled in common
SONY CORP23 citations81
US4641210AFeb 3, 1987
Magnetic recording and reproducing apparatus
SONY CORP24 citations81
USRE34927EMay 2, 1995
Magnetic tape cassette with tape protective closure and lock mechanism
SONY CORP5 citations73
US4935895AJun 19, 1990
Magnetic tape cassette loading system in recording and/or reproducing apparatus
SONY CORP15 citations73
US4881137ANov 14, 1989
Magnetic tape cassette with tape protective closure and lock mechanism
SONY CORP11 citations73
US4843510AJun 27, 1989
Magnetic tape cassette with tape protective closure and lock mechanism
SONY CORP5 citations73
US4694360ASep 15, 1987
Tape cassette with concave engagement portion and player with hook engageable therewith
SONY CORP6 citations73
US4908723AMar 13, 1990
Compact recording and/or reproducing apparatus with oblique rotary head
SONY CORP11 citations71
US5835317ANov 10, 1998
Cleaning device for magnetic tape recording and/or reproducing apparatus
SONY CORP4 citations62
US4816953AMar 28, 1989
Tape cassette with groove engageable with loading hook
SONY CORP5 citations62
US4777546AOct 11, 1988
Cassette-type magnetic tape recording and/or reproducing apparatus with single motor for tape loading and unloading and for pinch roller actuation
SONY CORP3 citations61
US5126909AJun 30, 1992
Slider lock braking mechanism for setting modes in tape player
SONY CORP5 citations60
US5162956ANov 10, 1992
Cassette holder assembly having multiple projections differentiated in dimension
SONY CORP4 citations58