P

Inventor

TAKAMOTO KENJI

JP25 patents
⚠️ This page may combine multiple inventors who share the name “TAKAMOTO KENJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

17 patents
US5980054ANov 9, 1999

Panel-form illuminating system

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD104 citations97
US5894345AApr 13, 1999

Optical method of detecting defect and apparatus used therein

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD53 citations96
US5748305AMay 5, 1998

Method and apparatus for particle inspection

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD92 citations96
US5717485AFeb 10, 1998

Foreign substance inspection apparatus

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD54 citations96
US6068382AMay 30, 2000

Panel-form illuminating system

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD65 citations95
US5699153ADec 16, 1997

Method and apparatus for optical inspection

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD23 citations93
US5696374ADec 9, 1997

Optical encoder using doubled diffraction angle based on first and second diffraction gratings

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD18 citations93
US5661295AAug 26, 1997

Optical encoder with dual diffraction gratings

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD25 citations93
US5627678AMay 6, 1997

Fourier transform optical apparatus and optical information

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD33 citations93
US5532823AJul 2, 1996

Method of measuring optical characteristics of liquid crystal cells, measurement equipment therefor and method for manufacturing liquid crystal devices

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD33 citations93
US5986727ANov 16, 1999

Back light illuminator for liquid crystal display apparatus

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD32 citations92
US5981941ANov 9, 1999

Optical encorder for detection having a moving reference point

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD43 citations91
US5754341AMay 19, 1998

Phase grating, its fabricating method, optical encoder, motor using the optical encoder, and robot using the motor

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD18 citations84
US5999249ADec 7, 1999

Position detecting element and range sensor

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD8 citations74
US5734472AMar 31, 1998

Method and appratus for measuring thickness of birefringence layer

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD11 citations74
US5696373ADec 9, 1997

Optical encoder with dual diffraction grating

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD11 citations74
US5694218ADec 2, 1997

Optical encoder including a plurality of phase adjusting gratings

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD10 citations74

HITACHI LTD

5 patents

PANASONIC IP MAN CO LTD

3 patents