Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Reexamination Certificate
2004-03-09
2008-08-12
Bos, Steven (Department: 1793)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
C502S349000, C502S439000, C423S022000, C423S023000, C427S384000, C427S402000
Reexamination Certificate
active
07410930
ABSTRACT:
The present invention is a method for recovering a catalyst from a catalyst body comprising a carrier having a catalyst layer formed on at least a part of the surface thereof, which comprises (a) a step of forming an overcoat layer on the surface of the catalyst layer, and (b) a step of allowing the catalyst body having the overcoat layer formed thereon to stand under the condition to result in a difference in expansibility or contractility exhibited by the overcoat layer from that exhibited by the carrier, wherein exfoliation of the catalyst layer from the carrier is permitted by means of the resulting difference in expansibility or contractility under the condition.
REFERENCES:
patent: 4532228 (1985-07-01), Golino et al.
patent: 5854161 (1998-12-01), Ichiki et al.
patent: 6896857 (2005-05-01), Nakamura et al.
patent: 03154640 (1991-07-01), None
patent: 11028367 (1999-02-01), None
patent: 11158563 (1999-06-01), None
patent: 2002186862 (2002-07-01), None
PCT International Search Report dated May 25, 2004.
“Technology on Recovery and Recycle of Catalyst for Motor Vehicles,” JETI, vol. 46, No. 5 (1998), pp. 56-58 with English translation pp. 1-5.
Fujihara Seiji
Taguchi Kiyoshi
Ukai Kunihiro
Wakita Hidenobu
Bos Steven
Dickinson Wright PLLC
Matsushita Electric - Industrial Co., Ltd.
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