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Inventor

Keiji Tada

Inventor
Kudamatsu, JP

Overview

4→
Patents
1986–2020
Patent span
Electricity
Primary field (CPC H)

Patents· 4 as inventor

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

H01Jprimary
H01JElectric discharge tubes or discharge lamps60%
G01NInvestigating or analysing materials by determining their chemical or physical properties40%
PatentTitleYear
10,732,104Measuring chip, measuring device and measuring method20205,118,378'Apparatus for detecting an end point of etching'19924,936,967'Method of detecting an end point of plasma treatment'19904,615,761'Method of and apparatus for detecting an end point of plasma treatment'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–1992Patents assigned to HITACHI LTD (3)· patent assignee history
1986Patents assigned to HITACHI SANKI ENG CO LTD (1)· patent assignee history
1986–1992Based in Kudamatsu, JP· patent location history
2020Patents assigned to FURUNO ELECTRIC CO (1)· patent assignee history
2020Based in Kobe, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD31986–1992
FURUNO ELECTRIC CO12020
HITACHI SANKI ENG CO LTD11986
Locations
LocationPatentsSpan
Kudamatsu, JP31986–1992
Kobe, JP12020