Inventor

Kouichi Hasegawa

Inventor

Tokyo, JP

Overview

1979–2017

Patent span

Electricity

Primary field (CPC H)

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

C09Dprimary

C09DCoating compositions, e.g. paints, varnishes or lacquers12%

H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h1012%

Y10TTechnical subjects covered by former us classification12%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds6%

G10KSound-producing devices6%

H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers6%

A61KPreparations for medical, dental or toiletry purposes3%

B21BRolling of metal3%

B60NSeats specially adapted for vehicles3%

C04BLime, magnesia3%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1979–2001Based in Tokyo, JP· patent location history

1988–2012Patents assigned to HASEGAWA KOUICHI (2)· patent assignee history

1988–1991Patents assigned to HITACHI LTD (2)· patent assignee history

1988–1991Based in Tachikawa, JP· patent location history

1997–2001Patents assigned to MITSUBISHI ELECTRIC CORP (2)· patent assignee history

2002–2006Patents assigned to JSR CORP (4)· patent assignee history

2002–2006Based in Ibaraki, JP· patent location history

2012Based in Pasadena, CA, US· patent location history

2016–2017Patents assigned to SUMITOMO RIKO CO LTD (3)· patent assignee history

2016–2017Based in Aichi, JP· patent location history

Assignee and location history derived from the patent record.

Assignees

Locations