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Inventor

Hiroyasu Kawashima

Inventor
Tokyo, JP

Overview

4→
Patents
2008–2012
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 4 as inventor

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

F04Dprimary
F04DNon-positive-displacement pumps50%
F05DIndexing scheme for aspects relating to non-positive-displacement machines or engines, gas-turbines or jet-propulsion plants17%
G01DMeasuring not specially adapted for a specific variable17%
G01FMeasuring volume, volume flow, mass flow or liquid level17%
PatentTitleYear
8,172,515'Turbo vacuum pump'20128,066,495'Turbo vacuum pump and semiconductor manufacturing apparatus having the same'20117,717,684'Turbo vacuum pump and semiconductor manufacturing apparatus having the same'20107,360,454'Flowmeter having a float and a displacement sensor'2008

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2008–2012Patents assigned to EBARA CORP (4)· patent assignee history
2008–2012Based in Tokyo, JP· patent location history
2011–2012Patents assigned to KAWASHIMA HIROYASU (2)· patent assignee history
2011–2012Patents assigned to SEKIGUCHI SHINICHI (2)· patent assignee history
2011Patents assigned to OGAMINO HIROAKI (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
EBARA CORP42008–2012
KAWASHIMA HIROYASUself22011–2012
SEKIGUCHI SHINICHI22011–2012
OGAMINO HIROAKI12011
Locations
LocationPatentsSpan
Tokyo, JP42008–2012