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Inventor

Naohiro Hanaoka

Inventor
Hachioji, JP

Overview

13→
Patents
1977–1997
Patent span
Physics
Primary field (CPC G)

Patents· 13 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 transducer48%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests19%
H02KDynamo-electric machines14%
Y10TTechnical subjects covered by former us classification14%
H01FMagnets5%
PatentTitleYear
5,628,951'Method of producing a coreless armature'19975,460,503'Mold for forming a coreless armature'19955,304,884'Molded armature'19944,555,444'Magnetic recording medium and method for manufacturing the same'19854,410,583'Ferromagnetic recording medium'19834,369,477'Magnetic head and method of manufacturing the same'19834,363,058'Magnetic recording device'19824,363,052'Thermomagnetic recording device'19824,340,914'Thermomagnetic recording and reproducing apparatus'19824,186,364'Method of magnetizing erasing head'19804,141,052'Erase head'19794,118,747'Composite magnetic head'19784,012,783'Magnetic head'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1997Patents assigned to OLYMPUS OPTICAL CO (13)· patent assignee history
1977–1995Based in Hachioji, JP· patent location history
1980Based in Tama, JP· patent location history
1985Based in Tokyo, JP· patent location history
1994–1997Based in Hachiohji, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
OLYMPUS OPTICAL CO131977–1997
Locations
LocationPatentsSpan
Hachioji, JP91977–1995
Hachiohji, JP21994–1997
Tokyo, JP11985
Tama, JP11980