Inventor
WATANABE SEIZO
JP18 patents
⚠️ This page may combine multiple inventors who share the name “WATANABE SEIZO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OLYMPUS OPTICAL CO
14 patentsUS4309002AJan 5, 1982
Mechanism for preventing loosening of magnetic recording tape of tape cassette
OLYMPUS OPTICAL CO35 citations92
US4724962AFeb 16, 1988
Disk jacket
OLYMPUS OPTICAL CO34 citations88
US4372504AFeb 8, 1983
Magnetic record tape protective device for a tape cassette
OLYMPUS OPTICAL CO24 citations82
US4086510AApr 25, 1978
Flat miniature dynamoelectric machine
OLYMPUS OPTICAL CO20 citations81
US4489124ADec 18, 1984
Process for forming thin film, heat treatment process of thin film sheet, and heat treatment apparatus therefor
OLYMPUS OPTICAL CO19 citations73
US4390917AJun 28, 1983
Device for detecting edge of magnetic tape for recording signals
OLYMPUS OPTICAL CO10 citations73
US4363042ADec 7, 1982
Method and apparatus for automatically tracking a magnetic tape
OLYMPUS OPTICAL CO15 citations73
US4356524AOct 26, 1982
Magnetic head
OLYMPUS OPTICAL CO15 citations73
US4355750AOct 26, 1982
Double-capstan tape driving device
OLYMPUS OPTICAL CO4 citations63
US4352473AOct 5, 1982
Tape cassette
OLYMPUS OPTICAL CO6 citations63
US4407861AOct 4, 1983
Method of manufacturing a magnetic recording medium of thin metallic film type
OLYMPUS OPTICAL CO2 citations62
US4320879AMar 23, 1982
Tape cassette drive assembly
OLYMPUS OPTICAL CO5 citations62
US4316590AFeb 23, 1982
Tape cassette
OLYMPUS OPTICAL CO2 citations62
US4330802AMay 18, 1982
Magnetic cassette tape record and play apparatus
OLYMPUS OPTICAL CO6 citations60