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Inventor

Yasushi Yamagata

Inventor
Tokyo, JP

Overview

14→
Patents
1991–2019
Patent span
Electricity
Primary field (CPC H)

Patents· 14 as inventor

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

H10Dprimary
H10DInorganic electric semiconductor devices17%
G11CStatic stores15%
H10BElectronic memory devices15%
H01LSemiconductor devices11%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h1011%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h109%
G04GElectronic time-pieces7%
H04BTransmission7%
G06FElectric digital data processing4%
H01JElectric discharge tubes or discharge lamps4%
PatentTitleYear
10,311,943Semiconductor integrated circuit device and wearable device201910,014,067Semiconductor device and manufacturing method thereof20189,959,924Semiconductor integrated circuit device and wearable device20189,947,645Multi-project wafer with IP protection by reticle mask pattern modification20189,646,679'Semiconductor device with mode designation and substrate bias circuits'20179,069,923'IP protection'20155,677,875'Non-volatile semiconductor memory device configured to minimize variations in threshold voltages of non-written memory cells and potentials of selected bit lines'19975,535,158'Non-volatile semiconductor memory device and method for erasure and production thereof'19965,441,595'Dry etching apparatus and method of forming a via hole in an interlayer insulator using same'19955,362,358'Dry etching apparatus and method of forming a via hole in an interlayer insulator using same'19945,331,592'Non-volatile semiconductor memory device with erasure control circuit'19945,282,160'Non-volatile semiconductor memory having double gate structure'19945,210,053'Method for fabricating semiconductor device'19935,070,378'EPROM erasable by UV radiation having redundant circuit'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–1997Patents assigned to NEC CORP (8)· patent assignee history
1991–2019Based in Tokyo, JP· patent location history
2015–2019Patents assigned to RENESAS ELECTRONICS CORP (6)· patent assignee history
2015–2018Patents assigned to GLOBALFOUNDRIES SG PTE LTD (2)· patent assignee history
2015–2018Patents assigned to IBM (2)· patent assignee history
2015Based in Hopewell Jct., NY, US· patent location history
2018Patents assigned to ENESAS ELECTRONICS CORP (1)· patent assignee history
2018Based in Hopewell Junction, NY, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NEC CORP81991–1997
RENESAS ELECTRONICS CORP62015–2019
GLOBALFOUNDRIES SG PTE LTD22015–2018
IBM22015–2018
ENESAS ELECTRONICS CORP12018
Locations
LocationPatentsSpan
Tokyo, JP121991–2019
Hopewell Junction, New York, US12018
Hopewell Jct., New York, US12015