Inventor
KOIKE EISHI
JP35 patents
⚠️ This page may combine multiple inventors who share the name “KOIKE EISHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OZEN CORP
32 patentsUS4801880AJan 31, 1989
Device for measuring the speed of a moving object
OZEN CORP29 citations92
US4827465AMay 2, 1989
Simplified sound reproducing device having a means for preventing collision between a reproducing stylus and a record disc
OZEN CORP10 citations73
US4757491AJul 12, 1988
Sound generating toy
OZEN CORP12 citations73
US4723291AFeb 2, 1988
Voice generating device
OZEN CORP7 citations73
US4701681AOct 20, 1987
Starting device for a toy motor using an ultrasonic wave signal
OZEN CORP10 citations73
US4648086AMar 3, 1987
Simplified sound reproducing device capable of reproducing a plurality of recorded items
OZEN CORP20 citations73
US4574370AMar 4, 1986
Sound reproduction selection apparatus for a simplified sound reproducing device
OZEN CORP8 citations73
US4524437AJun 18, 1985
Simplified sound-reproducing device having an external output shaft
OZEN CORP8 citations73
US4876678AOct 24, 1989
Sound reproducing device for playing a record disc having a plurality of recorded grooves
OZEN CORP6 citations69
US4823332AApr 18, 1989
Simplified sound reproducing device capable of reproducing a plurality of record discs
OZEN CORP5 citations62
US4705994ANov 10, 1987
Electric equipment driving circuit
OZEN CORP6 citations62
US4694445ASep 15, 1987
Record disc replacing means for a selective playing type sound reproducing device
OZEN CORP5 citations62
US4694444ASep 15, 1987
Record disc replacing means
OZEN CORP2 citations62
US4694446ASep 15, 1987
Simplified sound reproducing device of random selecting type
OZEN CORP4 citations62
US4670868AJun 2, 1987
Simplified sound reproducing device having a plurality of external shaft corresponding to the recorded items
OZEN CORP5 citations62
US4670867AJun 2, 1987
Simplified sound reproducing device having a plurality of external shaft corresponding to the recorded items
OZEN CORP4 citations62
US4622658ANov 11, 1986
Simplified sound reproducing device having switchable circuits
OZEN CORP4 citations62
US4541085ASep 10, 1985
Simple acoustic playback device for a record having plurality of recording grooves
OZEN CORP4 citations62
US4486871ADec 4, 1984
Continuous repeating type simplified sound reproducing device
OZEN CORP2 citations62
US4482990ANov 13, 1984
Simplified sound-reproducing device for a record disc having a plurality of recorded grooves
OZEN CORP5 citations62
US4447898AMay 8, 1984
Simplified sound reproducing device driven by a spring motor
OZEN CORP4 citations62
US4404667ASep 13, 1983
Sound reproducing device driven by a constant torque pull string type spring and started by selective starter rods for playing multiple record grooves
OZEN CORP6 citations62
US5247511ASep 21, 1993
Compact sound record playing apparatus
OZEN CORP5 citations59
US5177733AJan 5, 1993
Sound recording playing apparatus with improved vibration plate
OZEN CORP4 citations59
US5054012AOct 1, 1991
Sound reproducing device for playing a record disc having a plurality of recorded grooves
OZEN CORP5 citations58
US4811322AMar 7, 1989
Phonograph for a record disk having a plurality of sound grooves
OZEN CORP2 citations58
US5138602AAug 11, 1992
Sound record playing apparatus having shock responsive weight member to actuate the same
OZEN CORP6 citations57
US4800305AJan 24, 1989
Pull string mechanism in a pull string type sound reproducing device
OZEN CORP1 citations52
US4547873AOct 15, 1985
Simplified sound reproducing device
OZEN CORP1 citations52
US5103442AApr 7, 1992
Simplified acoustic playback apparatus
OZEN CORP1 citations47
US4862444AAug 29, 1989
Index carrier for indexing and reproducing a plurality of record discs and a simplified sound reproducing device incorporating thereof
OZEN CORP0 citations41
US4573150AFeb 25, 1986
Self-holding switch for use in a sound reproducing device
OZEN CORP0 citations41