C01D 1/34

Technology

Patent/Pub #	Title	Filing Date	Issue/Publication Date	Patent Owner
7988831	Method for purifying an aqueous patassium hydroxide solution having rich silicon impurities	Dec 19, 08	Aug 02, 11	Yeou Fa Chemical Co., Ltd.
4581207	Recovery of aluminum from spent liquor	Aug 06, 84	Apr 08, 86	ALUMINUM COMPANY OF AMERICA
4464347	Recovery of aluminum from spent liquor	Dec 27, 82	Aug 07, 84	ALCOA INC.

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Number of patents in all portfolios	100 (maximum)	1000 (maximum)	2000 (maximum)	Unlimited
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Number of patents in all portfolios	100 (maximum)	1000 (maximum)	2000 (maximum)	Unlimited
Follows in all categories (Watch)	10 (maximum)	50 (maximum)	500 (maximum)	Unlimited
Maximum number of portfolios	5 (maximum)	10 (maximum)	100 (maximum)	Unlimited
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