Colloid systems and wetting agents; subcombinations thereof; pro – Continuous or semicontinuous solid phase – The solid phase contains organic material
Reexamination Certificate
2011-03-01
2011-03-01
Metzmaier, Daniel S (Department: 1762)
Colloid systems and wetting agents; subcombinations thereof; pro
Continuous or semicontinuous solid phase
The solid phase contains organic material
C516S111000, C427S220000, C428S403000, C106S490000, C252S062000
Reexamination Certificate
active
07897648
ABSTRACT:
This invention relates to silica aerogels and to a method for their preparation from rice husk. Rice husk is very rich in silica, and its ash can contain up to 92-97% of amorphous silica. The rice husk ash is prepared by burning the rice husk on a heating plate with excess air until the white ash is obtained. Silica from rice ash husk is in a very active form and has been found to be a very potential starting material for silica aerogels.
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Metzmaier Daniel S
Smirman Preston
Smirman IP Law, PLLC
Universiti Teknologi Malaysia
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