Earth boring – well treating – and oil field chemistry – Well treating – Contains inorganic component other than water or clay
Reexamination Certificate
2007-05-11
2011-11-15
Kugel, Timothy J. (Department: 1763)
Earth boring, well treating, and oil field chemistry
Well treating
Contains inorganic component other than water or clay
C507S924000, C166S280100, C166S280200
Reexamination Certificate
active
08058213
ABSTRACT:
A composite proppant having an increased buoyancy comprising a proppant substrate such as a porous ceramic or a silica sand coated with a material of a lesser actual density than the apparent density of the proppant substrate to increase the buoyancy of the composite proppant.
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Aron Michael Joseph
Fennell Bedford W.
Petrella Jesse
Rediger Richard
Georgia-Pacific Chemicals LLC
Kerns Michael S.
Kugel Timothy J.
Li Aiqun
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