Brewer Science issued polymer, wet-developable patents

November 17, 2009–Brewer Science, Inc. has been issued two new coatings patents by the U.S. Patent and Trademark Office:


• U.S. Patent No. 7,608,342 covers compositions and methods for use of a coating with high transparency and high electrical conductivity.


• U.S. Patent No. 7,608,380 covers spin bowl compatible polyamic acids/imides, with superior optical properties that are wet-developable.


Brewer Science says its high-transparency, highly conductive coatings utilize a photopolymer and an electrically conductive polymer dispersed in a solvent system. These new compositions, says the company, can be applied to a variety of substrates.


The need for antireflective coatings that can be removed by conventional photoresist developers, are spin-applied, and exhibit good coating and optical properties has led to the invention of new material compositions for the manufacture of microelectronic devices.


“Developing electrically conductive coatings that remain transparent will greatly improve flat panel displays and other optoelectronic devices,” says Dr. Xing-Fu Zhong, scientist and inventor at Brewer Science (



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