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Inventor

Muneo Maegawa

Inventor
Hitachi, JP

Overview

2→
Patents
1979–1983
Patent span
General tagging of new technological developments
Primary field (CPC Y)

Patents· 2 as inventor

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

F16Jprimary
F16JPistons29%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution29%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests29%
F03BMachines or engines for liquids14%
PatentTitleYear
4,398,725'Rotary shaft water seal device in hydraulic machine'19834,180,273'Sealing device for rotor shaft of fluid machine'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979–1983Patents assigned to HITACHI LTD (2)· patent assignee history
1979–1983Based in Hitachi, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD21979–1983
Locations
LocationPatentsSpan
Hitachi, JP21979–1983