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:
Jun. 04, 2019
Filed:
Jan. 19, 2018
Switch Materials, Inc., Burnaby, CA;
Neil Robin Branda, Burnaby, CA;
Jeremy Graham Finden, Burnaby, CA;
Duhane Lam, Burnaby, CA;
Jonathan Ross Sargent, Burnaby, CA;
Cynthia Elizabeth Shippam, Burnaby, CA;
Douglas Malcolm Wiggin, Burnaby, CA;
SWITCH MATERIALS, INC., Burnaby (BC), CA;
Abstract
An apparatus comprising a switchable optical filter comprising a layer of switchable material, the switchable material comprising a photochromic/thermochromic, a photochromic/photochromic, or a photochromic/electrochromic compound; a first light source providing light of a wavelength that causes the switchable material to transition from a faded state to a dark state, or a dark state to a faded state; and a switch for controlling activation of the first light source.