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Inventor

Tatsuo Okumura

Inventor
Hashima-shi, JP

Overview

5→
Patents
2001–2005
Patent span
General tagging of new technological developments
Primary field (CPC Y)

Patents· 5 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 properties28%
F01NGas-flow silencers or exhaust apparatus for machines or engines in general17%
F02DControlling combustion engines17%
Y02ATechnologies for adaptation to climate change17%
Y02TClimate change mitigation technologies related to transportation17%
Y10TTechnical subjects covered by former us classification6%
PatentTitleYear
6,923,902'Methods and apparatus for measuring NOx gas concentration, for detecting exhaust gas concentration and for calibrating and controlling gas sensor'20056,743,352'Method and apparatus for correcting a gas sensor response for moisture in exhaust gas'20046,695,964'Method and apparatus for measuring NOx gas concentration'20046,375,828'Methods and apparatus for measuring NOx gas concentration, for detecting exhaust gas concentration and for calibrating and controlling gas sensor'20026,214,208'Method and apparatus for measuring NOx gas concentration'2001

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2001–2005Patents assigned to NGK SPARK PLUG CO (5)· patent assignee history
2001–2002Based in Gifu, JP· patent location history
2004–2005Based in Hashima-shi, JP· patent location history
2004Based in Nishikamo-gun, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NGK SPARK PLUG CO52001–2005
Locations
LocationPatentsSpan
Hashima-shi, JP22004–2005
Gifu, JP22001–2002
Nishikamo-gun, JP12004