Inventor

Tadashi Yokoyama

Inventor
Kanagawa, JP

Overview

18→
Patents
1983–2021
Patent span
Performing operations
Primary field (CPC B)

Patents· 18 as inventor

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

B60Qprimary
B60QArrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general13%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%
Y10TTechnical subjects covered by former us classification10%
D06PDyeing or printing textiles8%
B21DWorking or processing of sheet metal or metal tubes, rods or profiles without essentially removing material5%
B23GThread cutting5%
G11BInformation storage based on relative movement between record carrier and transducer5%
H01LSemiconductor devices5%
H02KDynamo-electric machines5%
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 systems5%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1983–1986Patents assigned to TOKAI RIKA CO LTD (5)· patent assignee history
1983–1986Based in Kuwana, JP· patent location history
1985Based in Mie, JP· patent location history
1987–2019Based in Tokyo, JP· patent location history
1991–2019Patents assigned to MITSUBISHI ELECTRIC CORP (4)· patent assignee history
1999Patents assigned to OSAKA PREFECTURE (3)· patent assignee history
1999Patents assigned to YUSHIRO CHEM IND (3)· patent assignee history
1999–2019Based in Kanagawa, JP· patent location history
2009Patents assigned to AMADA CO LTD (2)· patent assignee history
2021Based in Osaka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TOKAI RIKA CO LTD51983–1986
MITSUBISHI ELECTRIC CORP41991–2019
OSAKA PREFECTURE31999
YUSHIRO CHEM IND31999
AMADA CO LTD22009
Locations
LocationPatentsSpan
Kanagawa, JP61999–2019
Tokyo, JP31987–2019
Kuwana, JP31983–1986
Mie, JP21985
Osaka, JP12021