P

Inventor

HASEGAWA KAZUO

JP109 patents
⚠️ This page may combine multiple inventors who share the name “HASEGAWA KAZUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ALPS ELECTRIC CO LTD

31 patents
US4825209AApr 25, 1989

Remote control apparatus

ALPS ELECTRIC CO LTD211 citations99
US5406062AApr 11, 1995

Sensitivity adjustment circuit for bar code scanner and method therefor

ALPS ELECTRIC CO LTD106 citations98
US5874723AFeb 23, 1999

Charging apparatus for wireless device with magnetic lead switch

ALPS ELECTRIC CO LTD54 citations96
US5336874AAug 9, 1994

Bar code reader with error detection and decode control

ALPS ELECTRIC CO LTD84 citations96
US4837430AJun 6, 1989

Photoelectric touch panel having parallel light emitting and detecting arrays separated by a light shield

ALPS ELECTRIC CO LTD76 citations96
US4751379AJun 14, 1988

Touch panel coordinate input device having light filter

ALPS ELECTRIC CO LTD58 citations96
US4742221AMay 3, 1988

Optical coordinate position input device

ALPS ELECTRIC CO LTD108 citations96
US4737631AApr 12, 1988

Filter of photoelectric touch panel with integral spherical protrusion lens

ALPS ELECTRIC CO LTD77 citations96
US4737626AApr 12, 1988

Photoelectric touch panel having reflector and transparent photoconductive plate

ALPS ELECTRIC CO LTD78 citations96
US5122644AJun 16, 1992

Optical code reading device with autofocussing

ALPS ELECTRIC CO LTD54 citations95
US4804244AFeb 14, 1989

Connector for optical fiber

ALPS ELECTRIC CO LTD63 citations95
US4764981AAug 16, 1988

Remote control circuit

ALPS ELECTRIC CO LTD89 citations95
US4747656AMay 31, 1988

Optical fiber connector with locking mechanism

ALPS ELECTRIC CO LTD95 citations95
US5345167ASep 6, 1994

Automatically adjusting drive circuit for light emitting diode

ALPS ELECTRIC CO LTD75 citations94
US5144117ASep 1, 1992

Illumination type optical recorded information reading device

ALPS ELECTRIC CO LTD62 citations94
US5382782AJan 17, 1995

Circuit for adjusting sensitivity of optical character reader and method thereof

ALPS ELECTRIC CO LTD53 citations93
US5325073AJun 28, 1994

Amplifying apparatus with ac/dc feedback circuit

ALPS ELECTRIC CO LTD33 citations93
US4868550ASep 19, 1989

Photoelectric touch panel

ALPS ELECTRIC CO LTD48 citations93
US4851689AJul 25, 1989

Photodetecting circuit

ALPS ELECTRIC CO LTD34 citations93
US4772886ASep 20, 1988

Matrix driver

ALPS ELECTRIC CO LTD26 citations93
US6288474B1Sep 11, 2001

Drive detection device for gyroscope

ALPS ELECTRIC CO LTD28 citations92
US4859840AAug 22, 1989

Code reading apparatus

ALPS ELECTRIC CO LTD26 citations92
US4812642AMar 14, 1989

Optical coordinate system input device

ALPS ELECTRIC CO LTD29 citations92
US6823747B2Nov 30, 2004

Capacitive sensor

ALPS ELECTRIC CO LTD21 citations91
US5243182ASep 7, 1993

Photoelectric switch including synch timing signal emitter and detector and photoelectric detector system using the same

ALPS ELECTRIC CO LTD35 citations91
US4870367ASep 26, 1989

Signal amplifier circuit

ALPS ELECTRIC CO LTD27 citations86
US7024947B2Apr 11, 2006

Detection device including circuit component

ALPS ELECTRIC CO LTD17 citations82
US6829953B2Dec 14, 2004

Capacitive sensor

ALPS ELECTRIC CO LTD13 citations82
US4769535ASep 6, 1988

Dustproof structure for optical coordinate input apparatus

ALPS ELECTRIC CO LTD23 citations82
US4774404ASep 27, 1988

Optical path blockage detecting device

ALPS ELECTRIC CO LTD22 citations81
US6486743B2Nov 26, 2002

Device for driving and detecting oscillator

ALPS ELECTRIC CO LTD7 citations74

SANKYO CO

6 patents

MITSUBISHI ELECTRIC CORP

5 patents

TAISHO PHARMACEUTICAL CO LTD

3 patents

HASEGAWA KAZUO

2 patents

TOYOTA CHUO KENKYUSHO KK

1 patent

DAIICHI SEIYAKU CO

1 patent

SUZUKI HIROHISA

1 patent

Showing the top 50 of 109 patents by PatentIndex Score.