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Inventor

Hiroo Usui

Inventor
Machida, JP

Overview

3→
Patents
1977–2021
Patent span
Electricity
Primary field (CPC H)

Patents· 3 as inventor

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

H10Dprimary
H10DInorganic electric semiconductor devices17%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h1017%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%
A61BDiagnosis8%
A61NElectrotherapy8%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients8%
C09JAdhesives8%
G21FProtection against x-radiation, gamma radiation, corpuscular radiation or particle bombardment8%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h108%
PatentTitleYear
11,062,814Box-type structure having shielding function20214,394,191'Stacked polycrystalline silicon film of high and low conductivity layers'19834,016,007'Method for fabricating a silicon device utilizing ion-implantation and selective oxidation'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1983Patents assigned to HITACHI LTD (2)· patent assignee history
1977–1983Based in Machida, JP· patent location history
2021Patents assigned to NIPPON LIGHT METAL CO (1)· patent assignee history
2021Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD21977–1983
NIPPON LIGHT METAL CO12021
Locations
LocationPatentsSpan
Machida, JP21977–1983
Tokyo, JP12021