The 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.
