Appeal No. 2000-0053
Application 08/829,863
process for restoring a storage tank by placing in the tank a
mixture of unconsolidated solids and a gelation solution and
then gelling the gelation solution. Claim 1 is illustrative:
1. A process for restoring a storage tank comprising:
preparing a slurry containing unconsolidated solids and a
gelatin solution, wherein said gelation solution includes an
aqueous liquid solvent, a crosslinkable polymer and a
crosslinking agent;
placing said slurry in a storage tank having an internal
bottom surface;
gelling said gelation solution substantially to
completion in said storage tank to form a gel; and
binding said unconsolidated solids with said gel to
convert said slurry into a continuous hardened conglomeration.
THE REFERENCES
Sydansk et al. (Sydansk) 4,683,949 Aug. 4,
1987
Smith 4,706,754 Nov. 17,
1987
Clay 5,172,825 Dec. 22,
1992
THE REJECTION
Claims 1-18 stand rejected under 35 U.S.C. § 103 as being
unpatentable over Clay in view of Sydansk or Smith.
OPINION
2
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