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 patentsUS5980054ANov 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 patentsUS5412210AMay 2, 1995
Scanning electron microscope and method for production of semiconductor device by using the same
HITACHI LTD148 citations99
US6114695ASep 5, 2000
Scanning electron microscope and method for dimension measuring by using the same
HITACHI LTD62 citations96
US5969357AOct 19, 1999
Scanning electron microscope and method for dimension measuring by using the same
HITACHI LTD43 citations96
US5866904AFeb 2, 1999
Scanning electron microscope and method for dimension measuring by using the same
HITACHI LTD42 citations96
US5594245AJan 14, 1997
Scanning electron microscope and method for dimension measuring by using the same
HITACHI LTD71 citations96
PANASONIC IP MAN CO LTD
3 patentsUS10379282B2Aug 13, 2019
Multicolor display apparatus and method for setting gradation value of multicolor display apparatus
PANASONIC IP MAN CO LTD2 citations72
US10345503B2Jul 9, 2019
Display device
PANASONIC IP MAN CO LTD0 citations41
US10338296B2Jul 2, 2019
Display apparatus
PANASONIC IP MAN CO LTD0 citations41