US 11,945,972 B2
Composition including a color shifting pigment and a color filter
Cornelis Jan Delst, Fairfax, CA (US); and Paul Thomas Kohlmann, Windsor, CA (US)
Assigned to VIAVI SOLUTIONS INC., Chandler, AZ (US)
Filed by VIAVI SOLUTIONS INC., Chandler, AZ (US)
Filed on May 3, 2023, as Appl. No. 18/311,790.
Application 18/311,790 is a continuation of application No. 16/702,191, filed on Dec. 3, 2019.
Claims priority of provisional application 62/774,660, filed on Dec. 3, 2018.
Prior Publication US 2023/0272230 A1, Aug. 31, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C09D 5/29 (2006.01); B42D 25/369 (2014.01); B42D 25/373 (2014.01); B42D 25/378 (2014.01)
CPC C09D 5/29 (2013.01) [B42D 25/369 (2014.10); B42D 25/378 (2014.10); B42D 25/373 (2014.10)] 20 Claims
OG exemplary drawing
 
1. A composition comprising:
a first color shifting pigment having a property of a first color shift that extends from a starting color at normal through a plurality of colors as a viewing angle is increased to a final color, wherein the first color shift rotates counterclockwise relative to, and about, an origin of the L*a*b* color space; and
a color filter having the ability to transmit a portion of the first color shift of the first color shifting pigment and having the ability to absorb a remainder of the first color shift of the first color shifting pigment;
wherein the composition has a property of a second color shift different from the first color shift; and
wherein the second color shift has a first portion that rotates counterclockwise relative to the origin and a second portion that rotates clockwise relative to the origin.