Inventor

Tomoyuki Tobita

Inventor

Katsuta, JP

Overview

22→

Patents

1985–2020

Patent span

Physics

Primary field (CPC G)

Patents· 22 as inventor

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

G01Lprimary

G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure59%

G01NInvestigating or analysing materials by determining their chemical or physical properties11%

C22CAlloys7%

H01JElectric discharge tubes or discharge lamps7%

B01LChemical or physical laboratory apparatus for general use4%

C21DModifying the physical structure of ferrous metals4%

F23GCremation furnaces4%

G01FMeasuring volume, volume flow, mass flow or liquid level4%

PatentTitleYear

10,745,784High rigid spheroidal graphite cast iron2020 9,834,831High rigid spheroidal graphite cast iron2017 7,422,672'Capillary array apparatus, method of manufacturing the same, and electrophoresis analysis method'2008 7,053,367'Mass spectrometer'2006 7,027,935'Sample dispensing apparatus and automatic analyzer using the same'2006 6,580,067'Sample analyzing monitor and combustion control system using the same'2003 6,016,706'Process state detector, semiconductor sensor and display device for displaying a process state used therefor'2000 5,677,493'Composite condition detection apparatus for detecting static pressure, differential pressure and temperature of a process'1997 5,672,826'Semiconductor pressure sensor'1997 5,635,649'Multi-function differential pressure sensor with thin supporting base'1997 5,621,175'Differential pressure transmitter having symmetrical construction'1997 5,554,809'Process detection apparatus'1996 5,531,120'Compact differential pressure transmitter having first and second damper chambers'1996 5,528,940'Process condition detecting apparatus and semiconductor sensor condition detecting circuit'1996 5,477,738'Multi-function differential pressure sensor with thin stationary base'1995 5,469,749'Multiple-function fluid measuring and transmitting apparatus'1995 5,412,992'Differential pressure sensor capable of removing influence of static pressure and a method of assembling the same'1995 5,259,248'Integrated multisensor and static and differential pressure transmitter and plant system using the integrated multisensor'1993 5,257,546'Pressure measuring sensor'1993 4,995,266'Differential pressure transmitter'1991 4,972,716'Semiconductor pressure converting device'1990 4,546,653'Semiconductor differential pressure transducer'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985–2003Patents assigned to HITACHI LTD (17)· patent assignee history

1985–2000Based in Katsuta, JP· patent location history

1997–2008Based in Hitachinaka, JP· patent location history

2006–2008Patents assigned to HITACHI HIGH TECH CORP (3)· patent assignee history

2017–2020Patents assigned to KK RIKEN (2)· patent assignee history

2017–2020Based in Niigata, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	17	1985–2003
HITACHI HIGH TECH CORP	3	2006–2008
KK RIKEN	2	2017–2020

Locations

Location	Patents	Span
Katsuta, JP	15	1985–2000
Hitachinaka, JP	5	1997–2008
Niigata, JP	2	2017–2020