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:
Sep. 25, 2018
Filed:
May. 27, 2016
Semes Co., Ltd., Chungcheongnam-do, KR;
Seungho Lee, Chungcheongnam-do, KR;
Minhee Cho, Daejeon, KR;
Ki-Moon Kang, Chungcheongnam-do, KR;
Tae-Keun Kim, Incheon, KR;
SEMES CO., LTD., Chungcheongnam-Do, KR;
Abstract
Disclosed is a method of regenerating a phosphoric acid solution from a treatment liquid including silicon (Si), hydrogen fluoride (HF), and phosphoric acid, the method including removing the silicon by supplying hydrogen fluoride corresponding to a preset amount or more to the treatment liquid, removing the hydrogen fluoride by heating the treatment liquid to a boiling point of hydrogen fluoride or higher, and adjusting a temperature and a concentration of the phosphoric acid to preset values.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile