Inventor

Ren Ito

Inventor

Hitachi, JP

Overview

4→

Patents

1981–1984

Patent span

Chemistry

Primary field (CPC C)

Patents· 4 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%

C09DCoating compositions, e.g. paints, varnishes or lacquers17%

H05KPrinted circuits17%

PatentTitleYear

4,490,496'Moistureproof insulating coating composition for packing circuit boards'1984 4,454,052'Liquid absorbent for absorption type refrigerator'1984 4,381,886'Liquid crystal display element'1983 4,252,414'Liquid crystal display element'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–1984Patents assigned to HITACHI LTD (4)· patent assignee history

1981–1984Based in Hitachi, JP· patent location history

1984Patents assigned to HITACHI CHEMICAL CO LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	4	1981–1984
HITACHI CHEMICAL CO LTD	1	1984

Locations

Location	Patents	Span
Hitachi, JP	4	1981–1984