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:
Oct. 28, 2008
Filed:
Jul. 19, 2006
Ryouta Takahashi, Tokyo, JP;
Hideki Nakamura, Kanagawa, JP;
Kazuo Murakami, Kanagawa, JP;
Haruhiko Takase, Kanagawa, JP;
Noboru Jimbo, Kanagawa, JP;
Kazuya Yamada, Tokyo, JP;
Ryouta Takahashi, Tokyo, JP;
Hideki Nakamura, Kanagawa, JP;
Kazuo Murakami, Kanagawa, JP;
Haruhiko Takase, Kanagawa, JP;
Noboru Jimbo, Kanagawa, JP;
Kazuya Yamada, Tokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A hydrogen iodide manufacturing method which includes a step of producing aqueous solution of hydrogen iodide and sulfuric acid by causing iodine-containing aqueous solution and sulfur dioxide to react with each other in a pressurized condition. The pressurized condition may be of not lower than 0.1 MPa in gauge pressure. The method may further include: a separation step of adding iodine to the aqueous solution of hydrogen iodide and separating an upper phase containing sulfuric acid relatively to a large extent and a lower phase containing hydrogen iodide relatively to a large extent; and a step of producing hydrogen iodide by adding sulfur dioxide to the upper phase in a pressurized condition and extracting the produced hydrogen iodide to the lower phase.