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Inventor

Tsuneo Ishigaki

Inventor
Yawara-mura, JP

Overview

30→
Patents
1976–2019
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 30 as inventor

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

F16Kprimary
F16KValves60%
Y10TTechnical subjects covered by former us classification20%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h107%
H01FMagnets4%
B01DSeparation2%
E04HBuildings or like structures for particular purposes2%
F16JPistons2%
H01LSemiconductor devices2%
PatentTitleYear
10,253,889Gate valve20199,599,233'Gate valve'20179,482,350'Radical-resistant gate valve'20169,404,589'Non-sliding gate valve'20168,800,956'Non-sliding gate valve'20148,534,311'Vacuum valve'20137,896,313'Linear motion-type gate valve'20117,841,578'Vacuum valve'20107,234,679'Gate valve'20077,066,443'Gate valve'20066,932,111'Gate valve apparatus'20056,619,618'Gate valve'20036,523,833'Low load seal'20036,478,043'Opening/closing valve'20026,464,203'Swing-door gate valve'20026,433,308'High vacuum valve'20026,390,449'Gate valve'20026,299,133'Gate valve'20016,095,180'High-vacuum valve'20006,095,193'Smooth vent valve'20005,927,334'Three-port valve'19995,848,608'Vacuum-pressure-control slow exhaust valve'19985,836,568'High-vacuum valve'19985,145,152'High-vacuum valves'19925,072,592'Gas cleaner'19914,723,755'Two-port solenoid valve'19884,717,116'Pilot mode two-port solenoid valve'19884,443,775'Solenoid actuator'19844,409,580'Solenoid actuator for electromagnetic valve'19833,994,318'Pilot-controlled electromagnetic valve'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1984Patents assigned to SHOKETSU KINZOKU KOGYO KK (3)· patent assignee history
1976–1992Based in Soka, JP· patent location history
1988–2019Patents assigned to SMC CORP (23)· patent assignee history
1998–2007Based in Yawara-mura, JP· patent location history
2001–2002Patents assigned to SMC KK (4)· patent assignee history
2001–2002Based in Saitama, JP· patent location history
2003Patents assigned to MITSUBISHI CABLE IND LTD (1)· patent assignee history
2010–2013Based in Tsukubamirai, JP· patent location history
2013Patents assigned to ISHIGAKI TSUNEO (1)· patent assignee history
2014–2019Based in Kitakatsushika-gun, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SMC CORP231988–2019
SMC KK42001–2002
SHOKETSU KINZOKU KOGYO KK31976–1984
ISHIGAKI TSUNEOself12013
MITSUBISHI CABLE IND LTD12003
Locations
LocationPatentsSpan
Yawara-mura, JP91998–2007
Kitakatsushika-gun, JP52014–2019
Soka, JP51976–1992
Saitama, JP42001–2002
Tsukubamirai, JP32010–2013