Inventor

Zempei Tani

Inventor

Tondabayashi, JP

Overview

9→

Patents

1982–1990

Patent span

Physics

Primary field (CPC G)

Patents· 9 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G01Dprimary

G01DMeasuring not specially adapted for a specific variable19%

G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light13%

G05BControl or regulating systems in general13%

H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation13%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1013%

G01PMeasuring linear or angular speed, acceleration, deceleration, or shock6%

G03GElectrography6%

G06KGraphical data reading6%

H03MCoding6%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%

PatentTitleYear

4,975,569'Optical rotary encoder employing plural photosensors disposed in a specific arrangement'1990 4,692,025'Semiconductor color sensor detection circuit'1987 4,689,540'Position control in a D.C. motor'1987 4,654,525'Optical rotary encoder'1987 4,620,094'Photoelectric encoder'1986 4,614,874'Original document size detecting arrangement'1986 4,588,936'Digitalized position control for a D.C. motor'1986 4,318,115'Dual junction photoelectric semiconductor device'1982 4,309,604'Apparatus for sensing the wavelength and intensity of light'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982–1990Patents assigned to SHARP KK (9)· patent assignee history

1982–1990Based in Tondabayashi, JP· patent location history

1986Patents assigned to BROTHER IND LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SHARP KK	9	1982–1990
BROTHER IND LTD	1	1986

Locations

Location	Patents	Span
Tondabayashi, JP	9	1982–1990