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Inventor

Katsuyoshi Nagayasu

Inventor
Kanagawa, JP

Overview

4→
Patents
1991–2009
Patent span
Electricity
Primary field (CPC H)

Patents· 4 as inventor

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

H04Bprimary
H04BTransmission20%
H04MTelephonic communication20%
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers20%
B66BElevators10%
F24FAir-conditioning10%
G10KSound-producing devices10%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%
PatentTitleYear
7,536,212'Communication system using short range radio communication headset'20097,110,800'Communication system using short range radio communication headset'20065,460,570'Ventilator for elevator cage'19955,029,218'Noise cancellor'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–2009Patents assigned to TOSHIBA KK (4)· patent assignee history
1991Based in Yokohama, JP· patent location history
1995–2009Based in Kanagawa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TOSHIBA KK41991–2009
Locations
LocationPatentsSpan
Kanagawa, JP31995–2009
Yokohama, JP11991