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Inventor

Keiichi Oouchi

Inventor
Tokyo, JP

Overview

2→
Patents
2007–2021
Patent span
Electricity
Primary field (CPC H)

Patents· 2 as inventor

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

C30Bprimary
C30BSingle-crystal growth14%
H01LSemiconductor devices14%
H03BGeneration of oscillations, directly or by frequency-changing, by circuits employing active elements which operate in a non-switching manner14%
H03HImpedance networks, e.g. resonant circuits14%
H10DInorganic electric semiconductor devices14%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h1014%
Y10TTechnical subjects covered by former us classification14%
PatentTitleYear
11,031,238Silicon carbide stacked substrate and manufacturing method thereof20217,294,951'Piezoelectric vibrator, manufacturing method thereof, oscillator, electronic equipment, radio clock'2007

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2007Patents assigned to SEIKO INSTR INC (1)· patent assignee history
2007Based in Chiba, JP· patent location history
2021Patents assigned to HITACHI METALS LTD (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 METALS LTD12021
SEIKO INSTR INC12007
Locations
LocationPatentsSpan
Tokyo, JP12021
Chiba, JP12007