Patent · US Active

Optical filter

US8350054B2 · kind B2 · utility

3Cited by

1References

20Claims

0Family size

Assignee

ADEKA CORPORATION · JP

Inventors

Yukiko Mae · Tokyo, JP
Mitsuhiro Okada · Tokyo, JP

Key dates

Filing date	Jun 30, 2010
Grant date	Jan 8, 2013
Priority date	—
Expiry date	Aug 31, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P70/50
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

An optical filter containing at least one naphtholactam derivative represented by general formula (I), wherein X is oxygen or sulfur; R1, R2, R3, R4, R5, R6, and Y are each hydrogen, halogen, nitro, cyano, aldehyde, carboxyl, hydroxyl, —NRR′, organosilyl, optionally substituted C1-C30 alkyl, optionally substituted C6-C30 aryl, or optionally substituted C7-C30 arylalkyl; and R and R′ are each hydrogen, optionally substituted C1-C30 alkyl, or optionally substituted C6-C30 aryl.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.