US 5,290,930 AGranted

Triphenazinoxazines

AssigneeGentex Corporation

InventorHarlan J. Byker

Life of this patent

Estimating the term…

Abstract

The present invention provides certain triphenzainoxazines.

Claims2

Dependent claims

A compound of the formula ##STR13## wherein R.sub.77, R.sub.78 and R.sub.79 are the same or different and are each selected from the group consisting of alkyl of 1-6 carbon atoms.

Dependencies are inferred from the claim text.

Facts

Application: 08/013,162Filed 1 Feb 1993 · continuation
Priority: 31 Mar 1986
Granted: 1 Mar 1994
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

C07D 498/04
In which the condensed system contains two hetero rings: ortho-condensed systems
B60R 1/088
Anti-glare mirrors, e.g. "day-night" mirrors: using a cell of electrically changeable optical characteristic, e.g. liquid-crystal or…
C09K 9/02
Tenebrescent materials, i.e. materials for which the range of wavelengths for energy absorption is changed as a result of excitation by some…
G01R 13/40
Arrangements for displaying electric variables or waveforms: using modulation of a light beam otherwise than by mechanical displacement, e.g. by…

Family

Serial846,354Parent of this division · filed 31 Mar 1986
Serial422,601Parent of this division · filed 17 Oct 1989
Serial760,587Parent of this continuation · filed 16 Sep 1991
US 4,902,108 AParent of this division
US 5,290,930 AThis patent

From the US filing history. Foreign family members aren’t listed.

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