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:
Nov. 20, 2018
Filed:
May. 03, 2017
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
Takayoshi Nakahara, Jyoetsu, JP;
Takeru Watanabe, Jyoetsu, JP;
Seiichiro Tachibana, Jyoetsu, JP;
Tsutomu Ogihara, Jyoetsu, JP;
SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;
Abstract
The present invention provides a method for reducing a metal of a sugar-alcohol compound, the method including the steps of (A) protecting a hydroxyl group of a sugar-alcohol compound containing metal impurities with a protecting group, (B) removing the metal impurities from the sugar-alcohol compound having the hydroxyl group protected with the protecting group, and (C) eliminating the protecting group of the sugar-alcohol compound from which the metal has been removed. There can be provided a method for reducing a metal of a sugar-alcohol compound that can provide a sugar-alcohol compound with a suitable quality for the semiconductor apparatus manufacturing process.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile