On Wed, 02 Jul 2008 14:09:49 -0500, Kenneth Porter
wrote:

:I now believe that QTC is Quaestus Corporation, an optocoupler supplier
:which was acquired by Fairchild and then sold to Everlight.


It seems you are correct
http://sec.edgar-online.com/2001/04/...8/Section4.asp

The operational name however, was QT Optoelectronics.

The first SEC application to acquire QT Opto was made in 1995 and it was
completed around early 2000. In 2001 QT Optoelectronics Inc. formally became
"Fairchild Semiconductor - Optoelectronics Group".

In 2006 Everlight Electronic Co (Ltd) Taiwan acquired the opto business from
Fairchild.