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Inventor

Hiromi Nakahara

Inventor
Odawara, JP

Overview

5→
Patents
1978–1991
Patent span
Physics
Primary field (CPC G)

Patents· 5 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 transducer40%
B22FWorking metallic powder10%
B29CShaping or joining of plastics10%
C23CCoating metallic material10%
D21GCalenders10%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%
Y10TTechnical subjects covered by former us classification10%
PatentTitleYear
4,983,421'Method for producing magnetic recording media'19914,874,636'Method for preparing magnetic recording medium'19894,324,177'Calender roll for supercalender'19824,320,159'Magnetic recording medium'19824,076,861'Magnetic recording substance'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1991Patents assigned to FUJI PHOTO FILM CO LTD (5)· patent assignee history
1978–1982Based in Odawara, JP· patent location history
1989–1991Based in Kanagawa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
FUJI PHOTO FILM CO LTD51978–1991
Locations
LocationPatentsSpan
Odawara, JP31978–1982
Kanagawa, JP21989–1991