Inventor

Sunao Takahashi

Inventor
Hitachinaka, JP

Overview

9→
Patents
1991–2021
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 9 as inventor

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

F02Mprimary
F02MSupplying combustion engines in general with combustible mixtures or constituents thereof28%
F04BPositive-displacement machines for liquids28%
B08BCleaning in general6%
G01RMeasuring electric variables6%
G05DSystems for controlling or regulating non-electric variables6%
H01JElectric discharge tubes or discharge lamps6%
H01LSemiconductor devices6%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems6%
H04BTransmission6%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h106%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991Based in Kobe, JP· patent location history
1992–2002Patents assigned to KOKUSAI ELECTRIC CO LTD (2)· patent assignee history
1992Based in Sendai, JP· patent location history
2002–2021Based in Tokyo, JP· patent location history
2013–2014Patents assigned to HITACHI LTD (2)· patent assignee history
2013Patents assigned to HASHIDA MINORU (1)· patent assignee history
2013–2018Based in Hitachinaka, JP· patent location history
2017–2018Patents assigned to HITACHI AUTOMOTIVE SYSTEMS LTD (3)· patent assignee history
2021Patents assigned to EBARA CORP (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI AUTOMOTIVE SYSTEMS LTD32017–2018
HITACHI LTD22013–2014
KOKUSAI ELECTRIC CO LTD21992–2002
EBARA CORP12021
HASHIDA MINORU12013
Locations
LocationPatentsSpan
Hitachinaka, JP42013–2018
Tokyo, JP32002–2021
Sendai, JP11992
Kobe, JP11991