Inventor

Ryohei Kakuta

Inventor

Fukushima, JP

Overview

3→

Patents

2001

Patent span

Physics

Primary field (CPC G)

Patents· 3 as inventor

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

G02Bprimary

G02BOptical elements, systems or apparatus40%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein40%

G09GArrangements or circuits for control of indicating devices using static means to present variable information20%

PatentTitleYear

6,313,891'Liquid crystal display device with light quantity control portion'2001 6,297,786'Liquid crystal display apparatus'2001 6,219,117'Liquid crystal display device'2001

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2001Patents assigned to ALPS ELECTRIC CO LTD (3)· patent assignee history

2001Based in Fukushima, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ALPS ELECTRIC CO LTD	3	2001

Locations

Location	Patents	Span
Fukushima, JP	3	2001