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Inventor

Yoshirou Ishikawa

Inventor
Kanagawa, JP

Overview

3→
Patents
1987–1990
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.

H01Jprimary
H01JElectric discharge tubes or discharge lamps40%
H04NPictorial communication, e.g. television40%
H01CResistors20%
PatentTitleYear
4,900,983'Cathode ray tube employing index phosphor elements adhered to a color selective electrode'19904,896,081'Auto convergence circuit'19904,647,815'Resistors for use in cathode ray tubes'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–1990Patents assigned to SONY CORP (3)· patent assignee history
1987–1990Based in Kanagawa, JP· patent location history
1990Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SONY CORP31987–1990
Locations
LocationPatentsSpan
Kanagawa, JP21987–1990
Tokyo, JP11990