Hot gas filter
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Nov 6, 1990
Grant Date -
N/A
app pub date -
Jul 10, 1989
filing date -
Jul 10, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A ceramic filter element for filtering hot gasses is manufactured by first forming a skeletal member made up of randomly disposed ceramic fibers by pulling an aqueous solution of the fibers and a liquid binder onto a mandrel and then heat treating the member to dry the binder. The dried member is then coated with alumina gel, colloidal aluminum or colloidal silica and heat treated at a temperature within the range of 1700 degrees F. to 2300 degrees F. to dry the coating and increase the resistance of the coating to corrosion by hot gasses.
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