Inventor

Hideo Ohtani

Inventor

Tokyo, JP

Overview

1990–2017

Patent span

Physics

Primary field (CPC G)

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

LOC23primary

LOC2327%

F16KValves18%

G01FMeasuring volume, volume flow, mass flow or liquid level18%

A62DChemical means for extinguishing fires or for combating or protecting against harmful chemical agents9%

G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure9%

G05DSystems for controlling or regulating non-electric variables9%

Y10TTechnical subjects covered by former us classification9%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1990Patents assigned to RYOBI LTD (1)· patent assignee history

1990–2011Based in Tokyo, JP· patent location history

1994Patents assigned to CASIO COMPUTER CO LTD (1)· patent assignee history

1994–2017Based in Yokohama, JP· patent location history

1998–2000Patents assigned to YAMATAKE HONEYWELL CO LTD (3)· patent assignee history

1998–2000Based in Kariya, Aichi-pref., JP· patent location history

2001–2011Patents assigned to YAMATAKE CORP (3)· patent assignee history

2017Patents assigned to NAT UNIV CORP YOKOHAMA NAT UNIV (1)· patent assignee history

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
YAMATAKE CORP	3	2001–2011
YAMATAKE HONEYWELL CO LTD	3	1998–2000
CASIO COMPUTER CO LTD	1	1994
NAT UNIV CORP YOKOHAMA NAT UNIV	1	2017
RYOBI LTD	1	1990

Locations