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Machine translation
1. (WO1985005349) ALUMINA FOR SEMICONDUCTOR MEMORY CELL PACKAGE AND PROCESS FOR ITS PRODUCTION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1985/005349    International Application No.:    PCT/JP1985/000273
Publication Date: 05.12.1985 International Filing Date: 20.05.1985
IPC:
C01F 7/06 (2006.01), C01F 7/14 (2006.01), C01F 7/46 (2006.01), C01F 7/47 (2006.01), H01L 21/48 (2006.01), H01L 23/08 (2006.01)
Applicants: SHOWA ALUMINUM INDUSTRIES, K. K. [JP/JP]; 7-13, Shibakoen 1-chome, Minato-ku, Tokyo 105 (JP) (For All Designated States Except US).
SAKAMOTO, Akira [JP/JP]; (JP) (For US Only).
HIRAYANAGI, Koutaro [JP/JP]; (JP) (For US Only)
Inventors: SAKAMOTO, Akira; (JP).
HIRAYANAGI, Koutaro; (JP)
Agent: SHIGA, Masatake; 6th Floor, Tokyoekimae Bldg., 1-5, Yaesu 2-chome, Chuo-ku, Tokyo 104 (JP)
Priority Data:
59/99695 19.05.1984 JP
Title (EN) ALUMINA FOR SEMICONDUCTOR MEMORY CELL PACKAGE AND PROCESS FOR ITS PRODUCTION
(FR) ALUMINE POUR BOITIERS DE CELLULES DE MEMOIRE A SEMI-CONDUCTEURS ET SON PROCEDE DE PRODUCTION
Abstract: front page image
(EN)Alumina for semiconductor memory cell package radiating only low level $g(a)-rays, and a process for its production which comprises extracting an alumina component from bauxite to obtain a sodium aluminate solution, substantially removing organic compounds contained in the solution, seed-decomposing the solution to deposit alumina hydrate, and baking the alumina hydrate.
(FR)Alumine pour boîtiers de cellules de mémoire à semi-conducteurs ne rayonnant que des radiations $g(a) de faible intensité, et son procédé de production consistant à extraire un composant d'alumine à partir de bauxite pour obtenir une solution d'aluminate de sodium, à extraire sensiblement tous les composants organiques contenus dans la solution, à décomposer par germes la solution pour former un dépôt d'hydrate d'alumine, et à cuire au four l'hydrate d'alumine.
Designated States: AU, DE, GB, US.
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)