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Inventor

Akio Ohsaki

Inventor
Tokyo, JP

Overview

2→
Patents
1998–2004
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.

G01Nprimary
G01NInvestigating or analysing materials by determining their chemical or physical properties33%
G01RMeasuring electric variables33%
G02BOptical elements, systems or apparatus33%
PatentTitleYear
6,801,050'Driver circuit integrated with load current output circuit, pin electronics and IC tester having thereof'20045,812,264'Method of measuring surface reflectance and a method of producing antireflective polarizing film'1998

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998Patents assigned to SUMITOMO CHEMICAL CO (1)· patent assignee history
1998Based in Niihama, JP· patent location history
2004Patents assigned to HITACHI HI TECH ELECTRONICS EN (1)· patent assignee history
2004Patents assigned to HITACHI LTD (1)· patent assignee history
2004Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI HI TECH ELECTRONICS EN12004
HITACHI LTD12004
SUMITOMO CHEMICAL CO11998
Locations
LocationPatentsSpan
Tokyo, JP12004
Niihama, JP11998