RavenWindow Patent Granted : U.S. Patent and Trademark Office Allows Dynamic Window Patent

Online, October 27, 2011 (Newswire.com) - Denver-based RavenBrick(www.ravenbrick.com ) announced the allowance today of a "smart window" patent by the U.S. Patent and Trademark Office, for a "thermochromic" film that can be added to glass. The smart film is transparent when cold, but transitions to
a tinted state when heated. This marks the company's third U.S. patent in the smart window space.

"All of our core IP has now been granted," said Wil McCarthy, co-inventor and CTO of RavenBrick. "We now have industry leading versatility to offer countless variations of dynamic window technology. There are more than a dozen additional patents still pending review, but these three provide about 90% of the coverage for our RavenWindow product suite," McCarthy added. International approvals have also been received from the World Intellectual Property Organization, along with national ones in Canada, China, and Australia. Patents are also being sought in several additional regions, and the company is optimistic about its prospects. "This is a worldwide market," McCarthy observed. "We need -- and have successfully received -- strong, global
protection of our intellectual property."

RavenBrick's windows have been installed in several government buildings and mass production of the product is
expected in 2012.

About RavenBrick
Founded in 2006, RavenBrick is a Denver-based cleantech company that has developed patented and patents-pending thermochromic filter technology to manage solar heat gain in windows. As buildings are responsible for 40% of the energy used in North America, the ability to manage solar heat gain in windows,
the area of the biggest waste of heating and air conditioning, is essential to upgrading the building's thermal performance in a cost effective way. To learn more about RavenBrick, please visit www.ravenbrick.com