Patent · US Active

Polarizing, photochromic devices and methods of making the same

US7429105B2 · kind B2 · utility

7Cited by

98References

5Claims

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	Sep 30, 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 overmolding an at least partial coating of an at least partially ordered liquid crystal material and at least one at least partially aligned photochromic-dichroic compound on at least a portion of an optical substrate.

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