Inventor

Shinji Yokota

Inventor

Kanagawa, JP

Overview

1989–2021

Patent span

Electricity

Primary field (CPC H)

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

C09Kprimary

C09KMaterials for miscellaneous applications, not provided for elsewhere22%

G02BOptical elements, systems or apparatus22%

G03BApparatus or arrangements for taking photographs or for projecting or viewing them11%

H01HElectric switches11%

H01JElectric discharge tubes or discharge lamps11%

H04MTelephonic communication11%

H04NPictorial communication, e.g. television11%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1989Patents assigned to KASEI OPTONIX (2)· patent assignee history

1989Patents assigned to HITACHI LTD (1)· patent assignee history

1989Based in Isehara, JP· patent location history

1993–1995Patents assigned to MITSUBISHI ELECTRIC CORP (2)· patent assignee history

1993Based in Fukuyama, JP· patent location history

1995Based in Hiroshima, JP· patent location history

2012Patents assigned to NEC CORP (1)· patent assignee history

2012Based in Saitama, JP· patent location history

2021Patents assigned to RICOH CO LTD (1)· patent assignee history

2021Based in Kanagawa, JP· patent location history

Assignee and location history derived from the patent record.

Assignees

Locations