Patent · US Active

Polarizing, photochromic devices and methods of making the same

US7466469B2 · kind B2 · utility

3Cited by

99References

28Claims

0Family size

Assignee

PPG Industries Ohio, Inc. · US

Inventors

Anil Kumar · Dehradun, IN
Peter C. Foller · Murrysville, US
Forrest R. Blackburn · Monroeville, US
Jiping Shao · Monroeville, US
Meng He · Murrysville, US
Terry Kellar · Monroeville, US

Key dates

Filing date	Oct 31, 2006
Grant date	Dec 16, 2008
Priority date	—
Expiry date	Oct 31, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/24934
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A method of making an optical element including forming an at least partial coating of at least one at least partially aligned thermally reversible photochromic-dichroic compound on at least a portion of a substrate.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.