AP Technoglass has acquired from Research Frontiers a worldwide non-
exclusive license to manufacture and sell suspended particle device
(SPD) sunroof glass for use in variable light transmission sunroofs
produced by licensees of Research Frontiers. In an SPD "smart"
sunroof, you can instantly and precisely control how dark the sunroof
glass is, and adjust its light transmission by either turning a knob
or having the sunroof automatically adjust itself. This is made
possible by a thin film inside the sunroof glass that uses SPD light-
control technology invented by Research Frontiers. SPD technology is
licensed to a growing number of companies in various industries, and
is covered by more than 350 patents and patent applications held by
Research Frontiers worldwide.