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Inventor

Yasuaki Tomiyama

Inventor
Kanagawa, JP

Overview

3→
Patents
1998–2006
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.

H02Mprimary
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems33%
H04BTransmission33%
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers33%
PatentTitleYear
7,106,869'Condenser microphone'20065,898,577'Wireless transmitter'19995,758,268'Transmitter'1998

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998–2006Patents assigned to SONY CORP (3)· patent assignee history
1998–2006Based in Kanagawa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SONY CORP31998–2006
Locations
LocationPatentsSpan
Kanagawa, JP31998–2006