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Inventor

Takao Sumiyoshi

Inventor
Tokyo, JP

Overview

3→
Patents
1986–2003
Patent span
Physics
Primary field (CPC G)

Patents· 3 as inventor

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

G01Nprimary
G01NInvestigating or analysing materials by determining their chemical or physical properties50%
G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light25%
G05DSystems for controlling or regulating non-electric variables25%
PatentTitleYear
6,661,915'Illumination variable colorimetric method and colorimeter'20034,770,534'Color indication comparison method'19884,607,790'Cycle sequence time/temperature controller'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–2003Patents assigned to SUGA TEST INSTRUMENTS (3)· patent assignee history
1986–2003Based in Tokyo, JP· patent location history
1988Based in Suginami-ku, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SUGA TEST INSTRUMENTS31986–2003
Locations
LocationPatentsSpan
Tokyo, JP21986–2003
Suginami-ku, JP11988