Inventor

Yasushi Kawai

Inventor

Tokyo, JP

Overview

6→

Patents

1987–2020

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 6 as inventor

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

B23Kprimary

B23KSoldering or unsoldering25%

H01RElectrically-conductive connections17%

F04DNon-positive-displacement pumps8%

F05BIndexing scheme relating to wind, spring, weight, inertia or like motors, to machines or engines for liquids covered by subclasses f03b, f03d and f03g8%

F05DIndexing scheme for aspects relating to non-positive-displacement machines or engines, gas-turbines or jet-propulsion plants8%

F16JPistons8%

G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices8%

G06FElectric digital data processing8%

H01JElectric discharge tubes or discharge lamps8%

PatentTitleYear

10,655,632Shaft seal device and vertical pump with this shaft seal device2020 7,252,910'Fabrication method of semiconductor integrated circuit device and mask fabrication method'2007 5,805,888'Identifier dictionary-generating device'1998 5,164,596'Focused ion beam irradiating apparatus'1992 4,782,207'Electrode roll'1988 4,642,437'Electrode roll for electric resistance welding'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–1988Patents assigned to DAIWA CAN CO LTD (2)· patent assignee history

1987–1988Based in Sagamihara, JP· patent location history

1992–2007Patents assigned to DAINIPPON PRINTING CO LTD (2)· patent assignee history

1992–2020Based in Tokyo, JP· patent location history

1998Patents assigned to FUJITSU LTD (1)· patent assignee history

1998Based in Kawasaki, JP· patent location history

2007Based in Kawagoe, JP· patent location history

2020Patents assigned to EBARA CORP (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
DAINIPPON PRINTING CO LTD	2	1992–2007
DAIWA CAN CO LTD	2	1987–1988
EBARA CORP	1	2020
FUJITSU LTD	1	1998

Locations

Location	Patents	Span
Tokyo, JP	2	1992–2020
Sagamihara, JP	2	1987–1988
Kawagoe, JP	1	2007
Kawasaki, JP	1	1998