P

Inventor

MATSUMOTO SEIICHI

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

CANON KK

20 patents
US4053240AOct 11, 1977

Object distance measuring system for an optical instrument

CANON KK37 citations93
US3937950AFeb 10, 1976

Focus defecting system

CANON KK35 citations93
US4139278AFeb 13, 1979

Liquid crystal display device

CANON KK41 citations92
US4140378AFeb 20, 1979

View finder device having liquid crystal cell

CANON KK23 citations82
US4104650AAug 1, 1978

Sharp focus detecting system

CANON KK25 citations82
US3999192ADec 21, 1976

Focus detecting system

CANON KK21 citations82
US4299462ANov 10, 1981

View finder device having liquid crystal cell

CANON KK19 citations74
US4288151ASep 8, 1981

Power source switch for use in camera circuit to detect a focused condition

CANON KK5 citations74
US4142788AMar 6, 1979

Power source switch for use in a camera circuit to detect a focused condition

CANON KK15 citations74
US4142786AMar 6, 1979

Liquid crystal display device for a camera

CANON KK19 citations74
US4104651AAug 1, 1978

Focusing screen unit for single lens reflex camera

CANON KK9 citations74
US4095241AJun 13, 1978

Photo-sensing circuit

CANON KK9 citations74
US4031383AJun 21, 1977

Method for detecting visibility of image of an object and a device therefor

CANON KK17 citations74
US3953729AApr 27, 1976

Automatic focus adjustment of a camera

CANON KK12 citations74
US3950764AApr 13, 1976

System for automatically focusing an object in a camera or the like

CANON KK8 citations74
US4516835AMay 14, 1985

Liquid crystal display system

CANON KK5 citations63
US4016471AApr 5, 1977

Level detection system having a band-pass characteristic and a servo system including the same

CANON KK2 citations63
US3984677AOct 5, 1976

Photo-electric conversion element and a method for detecting object image visibility employing the same and also a device therefor

CANON KK6 citations63
US3973267AAug 3, 1976

Exposure control apparatus for a camera

CANON KK2 citations63
US3961178AJun 1, 1976

Image sharpness detecting system and apparatus utilizing the same

CANON KK2 citations63

MURATA MANUFACTURING CO

10 patents

NEC CORP

8 patents

MATSUMOTO SEIICHI

3 patents

FUKUDA METAL FOIL & POWDER CO LTD

2 patents

TOKYO SENI KOGYO KK

1 patent

NISHISAKA YASUHIRO

1 patent

SARUBAN MASAHITO

1 patent

HOSOE KAZUYA

1 patent

OGAWA MAKOTO

1 patent

NAKAMURA HIDEO

1 patent

NEC LCD TECHNOLOGIES LTD

1 patent

Showing the top 50 of 51 patents by PatentIndex Score.