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Inventor

Kenji Hirabayashi

Inventor
Tokyo, JP

Overview

4→
Patents
1981–1984
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.

G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer44%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests33%
Y10TTechnical subjects covered by former us classification22%
PatentTitleYear
4,464,433'Magnetic recording medium'19844,420,537'Magnetic recording medium having cobalt adsorbed iron oxide layer'19834,414,289'High density magnetic recording medium'19834,285,825'Method of producing magnetic coating material for magnetic recording media'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–1984Patents assigned to TDK ELECTRONICS CO LTD (4)· patent assignee history
1981–1984Based in Tokyo, JP· patent location history
1983Based in Saku, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TDK ELECTRONICS CO LTD41981–1984
Locations
LocationPatentsSpan
Tokyo, JP31981–1984
Saku, JP11983