LexDanaLexDanabeta
Inventor

Nobuyoshi Fujitsuka

Inventor
Ibaraki, JP

Overview

2→
Patents
1986
Patent span
Physics
Primary field (CPC G)

Patents· 2 as inventor

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

G01Jprimary
G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light67%
G01NInvestigating or analysing materials by determining their chemical or physical properties33%
PatentTitleYear
4,613,947'Method of measuring color difference of dyestuffs'19864,597,670'Method of measuring color difference of dyestuffs'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986Patents assigned to SUMITOMO CHEMICAL CO (2)· patent assignee history
1986Based in Ibaraki, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SUMITOMO CHEMICAL CO21986
Locations
LocationPatentsSpan
Ibaraki, JP21986