Patents by Inventor Abhiroop CHATTOPADHYAY

Abhiroop CHATTOPADHYAY has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Variable transmission window with blackout bars
    Patent number: 10295837
    Abstract: A variable transmission window includes a patterned first polarizer and an opposing patterned second polarizer. The first polarizer includes an optically transmissive first substrate; alternating first and second domains attached to the first substrate, the first domains having a polarization axis that is perpendicular to a polarization axis of the second domains; and blackout bars configured to block visible light, each blackout bar overlapping opposing edge regions of adjacent corresponding first and second domains. The second polarizer includes an optically transmissive second substrate; and alternating third and fourth domains attached to the second substrate, the third domains having a polarization axis that is perpendicular to a polarization axis of the fourth domains. The second polarizer may also include blackout bars overlapping opposing edge regions of adjacent corresponding third and fourth domains.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: May 21, 2019
    Assignee: VG SMARTGLASS, LLC
    Inventors: Ryan Tatzel, Michael Stacey, Abhiroop Chattopadhyay
  • VARIABLE TRANSMISSION WINDOW WITH BLACKOUT BARS
    Publication number: 20170146808
    Abstract: A variable transmission window includes a patterned first polarizer and an opposing patterned second polarizer. The first polarizer includes an optically transmissive first substrate; alternating first and second domains attached to the first substrate, the first domains having a polarization axis that is perpendicular to a polarization axis of the second domains; and blackout bars configured to block visible light, each blackout bar overlapping opposing edge regions of adjacent corresponding first and second domains. The second polarizer includes an optically transmissive second substrate; and alternating third and fourth domains attached to the second substrate, the third domains having a polarization axis that is perpendicular to a polarization axis of the fourth domains. The second polarizer may also include blackout bars overlapping opposing edge regions of adjacent corresponding third and fourth domains.
    Type: Application
    Filed: November 21, 2016
    Publication date: May 25, 2017
    Inventors: Ryan TATZEL, Michael STACEY, Abhiroop CHATTOPADHYAY