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Technology Stocks : Research Frontiers (REFR)

REFR 1.630

-6.8%

3:50 PM EST

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To: Ellen who wrote (1275)	7/19/1999 3:05:00 AM
From: Bill Wexler	Read Replies (1) of 50049

There is really nothing "proprietary" about Research frontier's "light absorbing particles". The particles themselves are SiO2 coated TiOxNy suspended is a fluid or gel. The basic idea has been around for years. In fact, there are other companies working on suspended particle (or electrophoretic) devices.... Toyota labs ad Nippon Sheet Glass --- so there goes RFI's claim that they have something unique. We actually spoke to one of the engineers at Toyota. The bottom line is that SPD may have some limited applications, but the big push has really been into electrochromics because of the far superior performance characteristics. One huge achilles heel of the SPD devices is that they go opaque when power is lost - making them nearly useless for architectural apps save perhaps skylights - but then you run into heat absorption problem. Another huge advantage that electrochromics have over SPD is that a current need only be applied when changing state, since electrochromic devices have "memory". They also operate at low DC voltages. SPD devices require constant high AC voltage to keep them transparent (though at low current).

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