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Inventor

Fujio Matsumoto

Inventor
Ibaraki, JP

Overview

4→
Patents
1986–1990
Patent span
Physics
Primary field (CPC G)

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 transducer67%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%
Y10TTechnical subjects covered by former us classification17%
PatentTitleYear
4,897,752'Disk cartridge'19904,803,584'Disk cartridge with cleaning sheet of non-woven fabric'19894,709,816'Recording disc cartridge'19874,630,728'Disc cartridge'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–1990Patents assigned to HITACHI MAXELL (4)· patent assignee history
1986Based in Ibaragi, JP· patent location history
1987–1989Based in Ibaraki, JP· patent location history
1990Based in Tsukuba, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI MAXELL41986–1990
Locations
LocationPatentsSpan
Ibaraki, JP21987–1989
Tsukuba, JP11990
Ibaragi, JP11986