Verification Technologies, Inc.

Scott Gerger

Rakesh Vig

Richard H Selinfreund

Peter D Miller

Ewell Cook

Anthony Saglimbeni

Junzhong Li

Junzhing Li

Mike Cunningham

Chris Phillips

A copy-protected optical medium comprising transient optical state change security materials that demonstrating an optical state change when exposed to the wavelengths of from about 770 nm to about 830 nm.

Transient optical state change materials useful in copy-protected compact discs

Methods for the preparation of 7-(dipropylamino)pheno-thiazin-3-ylidene]-dipropylamine.

Processes for preparing novel methylene blue derivative

A method and system for providing copy-protected optical medium using transient optical state change security materials capable of changing optical state when exposed to a wavelength of about 630 nm to about 660 nm and software code to detect such change in optical state.

Laser reactive dyes for DVD copy protection system

Growing community of inventors

Des Moines, IA, United States of America

Scott Gerger