Invention Grant
- Patent Title: Multilayer photochromic articles
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Application No.: US15746104Application Date: 2015-09-03
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Publication No.: US10423061B2Publication Date: 2019-09-24
- Inventor: Massimiliano Tomasulo , Cory Brown , Elizabeth Ann Zezinka
- Applicant: Transitions Optical, Inc.
- Applicant Address: US FL Pinellas Park
- Assignee: Transitions Optical, Inc.
- Current Assignee: Transitions Optical, Inc.
- Current Assignee Address: US FL Pinellas Park
- Agency: The Webb Law Firm
- International Application: PCT/US2015/048255 WO 20150903
- International Announcement: WO2017/039669 WO 20170309
- Main IPC: G03C1/73
- IPC: G03C1/73 ; G02C7/10 ; G02B5/23 ; G02B5/22 ; C09B57/00 ; C09K9/02 ; G02F1/00 ; G02F1/01 ; G02B1/04

Abstract:
A multilayer photochromic article can include a photochromic substrate, which may include a first photochromic layer defining a surface of the substrate, and a second photochromic layer positioned between the surface of the photochromic substrate and a source of actinic radiation, and in which the photochromic substrate and the second photochromic layer are selected such that the fade half-life of the photochromic substrate or the half-life of the first photochromic layer defining the surface of the substrate are greater than the fade half-life of the second photochromic layer.
Public/Granted literature
- US20180210330A1 Multilayer Photochromic Articles Public/Granted day:2018-07-26
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