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Inventor

Hirosi Akiyama

Inventor
Hitachi, JP

Overview

4→
Patents
1987–1997
Patent span
General tagging of new technological developments
Primary field (CPC Y)

Patents· 4 as inventor

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

Y10Tprimary
Y10TTechnical subjects covered by former us classification30%
B23KSoldering or unsoldering10%
C04BLime, magnesia10%
G11BInformation storage based on relative movement between record carrier and transducer10%
G21BFusion reactors10%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1010%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution10%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%
PatentTitleYear
5,621,243'Semiconductor device having thermal stress resistance structure'19974,690,793'Nuclear fusion reactor'19874,685,014'Production method of thin film magnetic head'19874,636,434'Ceramic composite article'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–1997Patents assigned to HITACHI LTD (3)· patent assignee history
1987Patents assigned to COMPUTER BASIC TECHNOLOGY ASS (1)· patent assignee history
1987–1997Based in Hitachi, JP· patent location history
1997Patents assigned to HITACHI HARAMACHI ELECTRONICS (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD31987–1997
COMPUTER BASIC TECHNOLOGY ASS11987
HITACHI HARAMACHI ELECTRONICS11997
Locations
LocationPatentsSpan
Hitachi, JP41987–1997