Inventor

Yosinori Hirai

Inventor

Shiga, JP

Overview

2→

Patents

1990–1999

Patent span

Chemistry

Primary field (CPC C)

Patents· 2 as inventor

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

C09Kprimary

C09KMaterials for miscellaneous applications, not provided for elsewhere33%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein33%

H01JElectric discharge tubes or discharge lamps33%

PatentTitleYear

5,861,713'Low voltage electron beam display apparatus having brightness increased by reducing an oxide inevitably formed on a surface of an oxisulfide phosphor on manufacture'1999 4,952,030'Liquid crystal display device with a 50.degree.-80.degree. twist angle'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990Patents assigned to ASAHI GLASS CO LTD (1)· patent assignee history

1990Based in Yokohama, JP· patent location history

1999Patents assigned to NEC CORP (1)· patent assignee history

1999Patents assigned to NICHIA KAGAKU KOGYO KK (1)· patent assignee history

1999Based in Shiga, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ASAHI GLASS CO LTD	1	1990
NEC CORP	1	1999
NICHIA KAGAKU KOGYO KK	1	1999

Locations

Location	Patents	Span
Shiga, JP	1	1999
Yokohama, JP	1	1990