Inventor

Keiichi Asakura

Inventor

Kanagawa, JP

Overview

1999–2014

Patent span

Electricity

Primary field (CPC H)

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 transducer15%

H04NPictorial communication, e.g. television15%

A61MDevices for introducing media into, or onto, the body8%

B01DSeparation8%

G06FElectric digital data processing8%

G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes8%

H03MCoding8%

H04BTransmission8%

H04LTransmission of digital information, e.g. telegraphic communication8%

H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers8%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1999–2004Patents assigned to SONY CORP (5)· patent assignee history

1999–2001Based in Kanagawa, JP· patent location history

2002–2004Based in Tokyo, JP· patent location history

2014Patents assigned to ASAKURA KEIICHI (1)· patent assignee history

2014Patents assigned to IKIKEN CO LTD (1)· patent assignee history

2014Patents assigned to WATANABE HIROFUMI (1)· patent assignee history

2014Based in Sayama, JP· patent location history

Assignee and location history derived from the patent record.

Assignees

Locations