Compositions – Etching or brightening compositions – Inorganic acid containing
Patent
1986-09-16
1988-02-16
Powell, William A.
Compositions
Etching or brightening compositions
Inorganic acid containing
156656, 1566591, 156664, 252 792, C23F 102, B44C 122, C03C 1500, C03C 2506
Patent
active
047253754
ABSTRACT:
An etchant composition comprising
REFERENCES:
patent: 4113486 (1978-09-01), Sato
patent: 4556449 (1985-12-01), Nelson
Deguchi Takayuki
Fujii Tsuneo
Tamaru Sinji
Daikin Industries Ltd.
Powell William A.
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