C - Chemistry – Metallurgy – 23 – G
Patent
C - Chemistry, Metallurgy
23
G
149/12
C23G 1/02 (2006.01)
Patent
CA 1127941
ABSTRACT OF THE DISCLOSURE A scale containing calcium oxalate as a main component which is adhered on an inner wall of an apparatus is easily removed by contacting it with an aqueous solution containing (1) aluminum ions and/or ferric ions and (2) anions of acid.
318583
Hayakawa Kazuhiko
Kotake Masayoshi
Mori Toshiki
Marks & Clerk
Nissan Chemical Industries Ltd.
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