Inventor

Toshihiko Tanuma

Inventor

Gunma, JP

Overview

3→

Patents

1989–1993

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.

B23Kprimary

B23KSoldering or unsoldering14%

H02HEmergency protective circuit arrangements14%

H02JElectric power networks14%

H02KDynamo-electric machines14%

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 systems14%

Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications14%

Y04SSystems integrating technologies related to power network operation, communication or information technologies for improving the electrical power generation, transmission, distribution, management or usage, i.e. smart grids14%

PatentTitleYear

5,250,786'D-C arc welding apparatus'1993 5,195,007'Engine-driven power generating system'1993 4,851,758'Brushless generator'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–1993Patents assigned to SAWAFUJI ELECTRIC CO LTD (2)· patent assignee history

1989–1993Based in Gunma, JP· patent location history

1993Patents assigned to DAIHATSU MOTOR CO LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SAWAFUJI ELECTRIC CO LTD	2	1989–1993
DAIHATSU MOTOR CO LTD	1	1993

Locations

Location	Patents	Span
Gunma, JP	3	1989–1993