Assignee
OZEN CORP
JP43 patents
Top patents by PatentIndex Score
US4801880AJan 31, 1989
Device for measuring the speed of a moving object
OZEN CORP29 citations92
US4433404AFeb 21, 1984
Variety playing sound reproducing device
OZEN CORP9 citations74
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
US5195919AMar 23, 1993
Panel piece combination toy
OZEN CORP10 citations68
US4404668ASep 13, 1983
Sound reproducing device
OZEN CORP6 citations63
US4373199AFeb 8, 1983
Apparatus for electromagnetically imparting stylus force for sound reproducing device comprising an inhibit circuit for shock noise of reproducing stylus
OZEN CORP6 citations63
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
US4694444ASep 15, 1987
Record disc replacing means
OZEN CORP2 citations62
US4694446ASep 15, 1987
Simplified sound reproducing device of random selecting type
OZEN CORP4 citations62
US4694445ASep 15, 1987
Record disc replacing means for a selective playing type sound reproducing device
OZEN CORP5 citations62
US4670867AJun 2, 1987
Simplified sound reproducing device having a plurality of external shaft corresponding to the recorded items
OZEN CORP4 citations62
US4670868AJun 2, 1987
Simplified sound reproducing device having a plurality of external shaft corresponding to the recorded items
OZEN CORP5 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
US4349747ASep 14, 1982
Sound response time switch for flowing current for a predetermined period of time
OZEN CORP6 citations57
US4234193ANov 18, 1980
Simplified phonograph capable of selecting desired grooves on a record disc
OZEN CORP2 citations57
US5164927ANov 17, 1992
Compact record player having downwardly extending notched rib and multiple selection levers
OZEN CORP4 citations55
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
USD277276SJan 22, 1985
Spring driven phonograph for internal placement in toys or the like
OZEN CORP0 citations52
US4408310AOct 4, 1983
Simplified sound reproducing device driven by a spring motor
OZEN CORP1 citations52
US5103442AApr 7, 1992
Simplified acoustic playback apparatus
OZEN CORP1 citations47
US4498160AFeb 5, 1985
Simplified record player capable of automatically housing reproducing stylus upon removal of record disc from the record player
OZEN CORP5 citations46
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
USD278334SApr 9, 1985
Electric motor driven phonograph for internal placement in toys or the like
OZEN CORP1 citations33