Michael F Weber, Timothy J Nevitt, William W Merrill, Kelly M Roscoe, Andrew J Ouderkirk, John A Wheatley, Gary B Hanson, James M Jonza, Jeffrey A Boettcher, Yaoqi J Liu, Terence D Neavin: Color shifting film. 3M Innovative Properties Company, Robert J Pechman, March 11, 2003: US06531230 (215 worldwide citation)

Multilayer polymeric films and other optical bodies are provided which is useful in making colored mirrors and polarizers. The films are characterized by a highly uniform change in color as a function of viewing angle.

Yaoqi Joe Liu, Bruce A Nerad, Laurence R Gilbert, Robert L Brott, Michael F Weber, Kelly M Roscoe, John A Wheatley: Multilayer reflector with selective transmission. 3M Innovative Properties Company, William D Miller, March 27, 2001: US06208466 (73 worldwide citation)

In a multilayer dielectric reflector, treating the surface of the reflector selectively increases the amount of light transmitted through the reflector. Various surface treatments can be used to permit light to transmit through the reflector that would otherwise be reflected by the reflector. In one ...