The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 14, 2000
Filed:
May. 12, 1998
Ming-Shyong Tsai, Tainan Hsien, TW;
Li-Mei Chen, Hsinchu, TW;
Yue-Chin Yeh, Taipei, TW;
Chiu-Chih Hsieh, Taipei, TW;
Ying-Tsung Chen, Chiayi, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Chang Chun Petrochemical Corporation, Taipei, TW;
China Steel Corporation, Kaohsiung, TW;
Union Petrochemical Corporation, Taipei, TW;
A-Green Corporation, Kaohsiung Hsein, TW;
China Petrochemical Development Corporation, Taipei, TW;
Wah Hing Industrial Corporation, Kaohsiung, TW;
Eternal Chemical Corporation, Kaohsiung, TW;
Chinese Petroleum Corporation, Taipei, TW;
Abstract
The present invention provides a polishing composition which comprises 100 weight part of water; 0.5 to 20 weight part of boehmite, a hydroxide of aluminum, pseudoboehmite or mixtures thereof; 1 to 50 weight part of aluminum oxide (Al.sub.2 O.sub.3); and 1 to 20 weight part of an acidic solution. The polishing composition of the present invention is a thixotropic fluid and displays satisfactory suspension properties. Therefore, it is very suitable for use as a polishing slurry.