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Inventor

Toshiro Matsubara

Inventor
Hiroshima, JP

Overview

3→
Patents
1991–2021
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 3 as inventor

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

F02Bprimary
F02BInternal-combustion piston engines20%
F02DControlling combustion engines20%
G01NInvestigating or analysing materials by determining their chemical or physical properties20%
G02BOptical elements, systems or apparatus20%
Y02TClimate change mitigation technologies related to transportation20%
PatentTitleYear
11,078,828Engine system2021D0323123'Wristwatch'19925,061,074'Apparatus for inspecting both sides of tape or sheet'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991Patents assigned to NIPPON STEEL CORP (1)· patent assignee history
1991Based in Tokyo, JP· patent location history
1992Patents assigned to HATTORI SEIKO CORP (1)· patent assignee history
1992Patents assigned to SEIKO EPSON CORP (1)· patent assignee history
1992Based in Nagano, JP· patent location history
2021Patents assigned to MAZDA MOTOR (1)· patent assignee history
2021Based in Hiroshima, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HATTORI SEIKO CORP11992
MAZDA MOTOR12021
NIPPON STEEL CORP11991
SEIKO EPSON CORP11992
Locations
LocationPatentsSpan
Hiroshima, JP12021
Nagano, JP11992
Tokyo, JP11991