Inventor

Tetsuji Aoyagi

Inventor
Kanagawa, JP

Overview

8→
Patents
1989–2021
Patent span
Physics
Primary field (CPC G)

Patents· 8 as inventor

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

G06Fprimary
G06FElectric digital data processing30%
G11BInformation storage based on relative movement between record carrier and transducer20%
H02KDynamo-electric machines20%
F03GSpring, weight, inertia or like motors10%
G02BOptical elements, systems or apparatus10%
G05GControl devices or systems insofar as characterised by mechanical features only10%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989Patents assigned to NAKAMICHI CORP (1)· patent assignee history
1989–2021Based in Tokyo, JP· patent location history
1994–2001Based in Kanagawa, JP· patent location history
1997–2001Patents assigned to MICROSOFT CORP (3)· patent assignee history
2002Patents assigned to DIGITAL STREAM CORP (1)· patent assignee history
2002Patents assigned to MITSUBISHI ELECTRIC CORP (1)· patent assignee history
2002Based in Yokohama, JP· patent location history
2021Patents assigned to ADAMANT NAMIKI PREC JEWEL CO LTD (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MICROSOFT CORP31997–2001
ADAMANT NAMIKI PREC JEWEL CO LTD22021
DIGITAL STREAM CORP12002
MITSUBISHI ELECTRIC CORP12002
NAKAMICHI CORP11989
Locations
LocationPatentsSpan
Kanagawa, JP41994–2001
Tokyo, JP31989–2021
Yokohama, JP12002