RavenBrick Earns Patent Approval; Materials
to be Installed in "America's Greenest Building"
January 22, 2010
U.S. Patent Office has issued a notice of allowance to Denver-based
RavenBrick for all 54 of its patent claims for the RavenWindow solar
heat blocking window filter technology, a system installed by insulating
glass fabricators during the fabrication process. The company produces
what it says is the industry's only automated, intelligent, market-ready
window filter, which automatically blocks solar heat when the outside
temperature is too hot, while allowing solar heat inside when the
outside temperature is cold. The smart-window filters use no electricity,
wiring or control systems and can reduce energy costs and consumption
by as much as 50 percent, while also reducing overheating, drafting
and glare to make for comfortable interior spaces.
"We are obviously pleased to receive a perfect score on the
allowance notice for the RavenWindow-ER technology, and that it
was achieved in just nine short months," says Alex Burney,
RavenBrick chief executive officer. "I view this as a clear
indicator that our technology is highly valued by builders and building
owners who appreciate energy efficiency and cost reductions. Now
we have the sole right to manufacture and market this technology."
While a number of different types of dynamic glazing materials are
currently available, Burney tells USGNN.com that his company's
product, which has been in development for about two years, is different
compared to others.
"Typically [other products are] electrochromic, which are driven
by electrical power. We call [ours] active-passive. It's active
in the sense that it does the change, and it's passive in the sense
that it does it without having any moving parts," says Burney.
"Ours is a thermochromic device so it's a filter that goes
into a standard insulating glass unit and it reacts much like tinted
sunglasses. We set the filter to transition at a given temperature,
let's say 80 degrees Fahrenheit, and when the glass gets to that
temperature it automatically switches to its tinting mode to reflect
out the solar heat gain."
He adds, that with some other types of dynamic window systems the
up-front cost is so excessive that it's a challenge to see the energy
"With our product, because there are no wires, it's actually
fairly inexpensive in comparison so end users can get a return on
investment of about five to seven years. We're a green company by
accident; we're really a financially prudent company. We didn't
want to launch a product for the sake of being green; it needed
to make end-user sense," says Burney.
With the approval of the patents, Burney says the company plans
to continue forming agreements with glass manufacturers that incorporate
the filter into their windows for commercial developments. He adds
that the first product installation will be the Department of Energy's
National Renewable Energy Laboratory (NREL) headquarters in Golden,
Colo., which has been called "the greenest building in America."
"The NREL headquarters needs to be a zero-usage energy building,
and our window products are going on one of the floors in the building,"
says Burney, who adds that they are working with Arch Aluminum &
Glass on the project.
"Arch is always on the lookout for new technology and it's
been a pleasure and honor to work with RavenBrick on their development,"
says Steve Perilstein, vice president of sales for Arch Aluminum
& Glass. "We are excited to be involved as we know that
technology like RavenBrick's is crucial to the advancement of supplying
the most energy efficient options available."
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