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:
Jun. 14, 2011
Filed:
Oct. 30, 2009
Mitsuru Horie, Tokyo, JP;
Hiroyuki Tomonaga, Tokyo, JP;
Masabumi Ito, Tokyo, JP;
Noriaki Shimodaira, Tokyo, JP;
Mitsuru Horie, Tokyo, JP;
Hiroyuki Tomonaga, Tokyo, JP;
Masabumi Ito, Tokyo, JP;
Noriaki Shimodaira, Tokyo, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
Spots generated on a glass substrate after a polishing step are reduced. The present invention relates to a method for polishing a glass substrate including injecting a silica abrasive and a high-boiling solvent in a final glass substrate polishing step. The high-boiling solvent is preferably a solvent having a molecular weight of 300 or lower and a boiling point of 150° C. or higher. As Examples of the high-boiling solvent having a molecular weight of 300 or lower and a boiling point of 150° C. or higher includes ethylene glycol, propylene glycol and glycerine.