The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 03, 2019
Filed:
Feb. 02, 2018
Switch Materials Inc., Burnaby, CA;
Neil Robin Branda, Burnaby, CA;
Zachary Bryce Erno, Burnaby, CA;
Jeremy Graham Finden, Burnaby, CA;
Duhane Lam, Burnaby, CA;
Charles Joseph Gongming Loo, Burnaby, CA;
Jonathan Ross Sargent, Burnaby, CA;
Matthew Paul Smit, Burnaby, CA;
Peter Alexander Von Hahn, Burnaby, CA;
Douglas Malcolm Wiggin, Burnaby, CA;
SWITCH MATERIALS INC., Burnaby, CA;
Abstract
A optical filter comprising a variable transmittance layer having a first spectrum in a dark state, and a second spectrum in a faded state; and a color balancing layer having a third spectrum; each of the first, second and third spectra comprising a visible portion; the first and third spectra combining to provide a dark state spectrum approximating a dark state target color; and the second and third spectra combining to provide a fades state spectrum approximating a faded state target color. The optical filter may further comprise a light attenuating layer. The optical filter may further comprise part of a laminated glass.