Inventor

Keiji Tsukamoto

Inventor

Wako, JP

Overview

1980–2021

Patent span

Electricity

Primary field (CPC H)

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

H01Mprimary

H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy27%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution27%

C01BNon-metallic elements12%

B25BTools or bench devices not otherwise provided for, for fastening, connecting, disengaging, or holding5%

H01HElectric switches5%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry2%

B25DPercussive tools2%

B25FCombination or multi-purpose tools not otherwise provided for2%

G04GElectronic time-pieces2%

G06FElectric digital data processing2%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1980Patents assigned to CITIZEN WATCH CO LTD (1)· patent assignee history

1980Based in Tokyo, JP· patent location history

2013–2016Patents assigned to TSUKAMOTO KEIJI (6)· patent assignee history

2013Based in Kameoka, JP· patent location history

2014–2020Patents assigned to HONDA MOTOR CO LTD (12)· patent assignee history

2014–2019Based in Wako, JP· patent location history

2015–2016Patents assigned to OGAWA TETSUYA (3)· patent assignee history

2019–2020Based in Saitama, JP· patent location history

2021Patents assigned to MAKITA CORP (2)· patent assignee history

2021Based in Anjo, JP· patent location history

Assignee and location history derived from the patent record.

Assignees

Locations