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Inventor

Katsumi Oyabu

Inventor
Hitachi, JP

Overview

2→
Patents
1983
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 2 as inventor

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

F01Dprimary
F01DNon-positive displacement machines or engines, e.g. steam turbines20%
F16CShafts20%
G01MTesting static or dynamic balance of machines or structures20%
G07CTime or attendance registers20%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests20%
PatentTitleYear
4,406,169'Method of and system for monitoring bearing conditions'19834,401,411'Device for connecting turbine blades'1983

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1983Patents assigned to HITACHI LTD (2)· patent assignee history
1983Based in Hitachi, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD21983
Locations
LocationPatentsSpan
Hitachi, JP21983