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Inventor

Naohisa Aoki

Inventor
Mitaka, JP

Overview

3→
Patents
1978–1984
Patent span
Electricity
Primary field (CPC H)

Patents· 3 as inventor

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

H04Rprimary
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers67%
G11BInformation storage based on relative movement between record carrier and transducer33%
PatentTitleYear
4,488,284'Moving-coil type pickup cartridge'19844,455,639'Moving coil type pickup cartridge'19844,101,133'Pickup tone arm'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1984Patents assigned to NIPPON COLUMBIA (2)· patent assignee history
1978–1984Based in Mitaka, JP· patent location history
1984Patents assigned to NIPPON COLUMBIA COMPANY LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NIPPON COLUMBIA21978–1984
NIPPON COLUMBIA COMPANY LTD11984
Locations
LocationPatentsSpan
Mitaka, JP31978–1984