Inventor
YOSHINO TOSHIKAZU
16 patents
⚠️ This page may combine multiple inventors who share the name “YOSHINO TOSHIKAZU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PIONEER ELECTRONIC CORP
13 patentsUS4972404ANov 20, 1990
Optical disc
PIONEER ELECTRONIC CORP42 citations92
US4221773ASep 9, 1980
Method of producing a carbon diaphragm for an acoustic instrument
PIONEER ELECTRONIC CORP29 citations81
US4341838AJul 27, 1982
Molding compositions and diaphragms, arm pipes and head shells molded therefrom
PIONEER ELECTRONIC CORP6 citations73
US4269416AMay 26, 1981
Head shell for record player tonearms
PIONEER ELECTRONIC CORP6 citations73
US4261580AApr 14, 1981
Arm pipe for record player tonearms
PIONEER ELECTRONIC CORP6 citations73
US4366205ADec 28, 1982
Tone-arm elements
PIONEER ELECTRONIC CORP10 citations72
US4343376AAug 10, 1982
Vibratory elements for audio equipment
PIONEER ELECTRONIC CORP13 citations72
US4404315ASep 13, 1983
Molding compositions and diaphragms, arm pipes and head shells molded therefrom
PIONEER ELECTRONIC CORP13 citations69
US4853260AAug 1, 1989
Optical disk and process for producing the same
PIONEER ELECTRONIC CORP2 citations62
US4791044ADec 13, 1988
Disk type information recording medium
PIONEER ELECTRONIC CORP5 citations62
US4362772ADec 7, 1982
Vibratory elements for audio equipment
PIONEER ELECTRONIC CORP5 citations61
US4196022AApr 1, 1980
Surface hardening method
PIONEER ELECTRONIC CORP2 citations61
US5036510AJul 30, 1991
Optical recording disk
PIONEER ELECTRONIC CORP1 citations52