P

Inventor

KATO KIICHI

JP42 patents
⚠️ This page may combine multiple inventors who share the name “KATO KIICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

OLYMPUS OPTICAL CO

27 patents
US4507763AMar 26, 1985

Optical information recording and/or reproducing apparatus and optical record medium for use in such apparatus

OLYMPUS OPTICAL CO61 citations96
US4464050AAug 7, 1984

Apparatus for detecting optically defects

OLYMPUS OPTICAL CO66 citations95
US4682311AJul 21, 1987

Photomagnetic differential reproducing system

OLYMPUS OPTICAL CO25 citations92
US4505585AMar 19, 1985

System for detecting defects on an optical surface

OLYMPUS OPTICAL CO55 citations92
US4472748ASep 18, 1984

Method of processing information signal with respect to opto-magnetic record medium

OLYMPUS OPTICAL CO36 citations92
US4451863AMay 29, 1984

Information reproducing apparatus based on opto-magnetic effect

OLYMPUS OPTICAL CO29 citations92
US4425636AJan 10, 1984

Method and apparatus for reproducing optically an information recorded on a record medium along tracks

OLYMPUS OPTICAL CO39 citations92
US4423495ADec 27, 1983

Method and apparatus for recording optically an information signal on a record medium along tracks

OLYMPUS OPTICAL CO35 citations92
US4422168ADec 20, 1983

Method and apparatus for detecting a focussing condition of an objective lens

OLYMPUS OPTICAL CO31 citations92
US4455085AJun 19, 1984

Method and apparatus for detecting a focussing condition of an objective lens

OLYMPUS OPTICAL CO21 citations82
US4621352ANov 4, 1986

Optical memory device

OLYMPUS OPTICAL CO8 citations74
US4607359AAug 19, 1986

Optical recording/reproducing apparatus

OLYMPUS OPTICAL CO12 citations74
US4554654ANov 19, 1985

Optical memory device with means for detecting erroneous data writing

OLYMPUS OPTICAL CO7 citations74
US4545651AOct 8, 1985

Optical system for synthesizing plural light beams

OLYMPUS OPTICAL CO15 citations74
US4499514AFeb 12, 1985

Disc drive apparatus

OLYMPUS OPTICAL CO9 citations74
US4495407AJan 22, 1985

System for focusing an optical head onto a flat surface

OLYMPUS OPTICAL CO12 citations74
US4890274ADec 26, 1989

Optical information recording and reproducing apparatus

OLYMPUS OPTICAL CO7 citations73
US4631712ADec 23, 1986

Optical disk apparatus with beam energy correction for deviations in inclination

OLYMPUS OPTICAL CO13 citations73
US4574371AMar 4, 1986

Apparatus for recording and reproducing information on an optical disc

OLYMPUS OPTICAL CO16 citations73
US4525825AJun 25, 1985

Method and apparatus for detecting focussing and tracking error signals

OLYMPUS OPTICAL CO14 citations73
US4520280AMay 28, 1985

Apparatus for detecting input signal

OLYMPUS OPTICAL CO14 citations73
US4509830AApr 9, 1985

Light beam separation method

OLYMPUS OPTICAL CO7 citations73
US4505584AMar 19, 1985

Method and apparatus for detecting focussing error signal of objective lens

OLYMPUS OPTICAL CO18 citations73
US4453239AJun 5, 1984

Method and apparatus for controlling the focusing and tracking of a light beam using a main and secondary light beam in association with multiple detectors

OLYMPUS OPTICAL CO20 citations73
US5249171ASep 28, 1993

Opto-magnetic pick-up device including phase difference correcting means

OLYMPUS OPTICAL CO4 citations62
US4757487AJul 12, 1988

Method and apparatus for detecting track crossings on an optical disc

OLYMPUS OPTICAL CO3 citations62
US4499572AFeb 12, 1985

Method for reading information or defect out of rotating disc

OLYMPUS OPTICAL CO6 citations62

FUJIFILM CORP

7 patents

FUJI PHOTO FILM CO LTD

6 patents

MAKITA CORP

1 patent

KATO KIICHI

1 patent