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:
May. 12, 2026
Filed:
Jun. 03, 2021
National Institute of Advanced Industrial Science and Technology, Tokyo, JP;
Tosoh Corporation, Shunan, JP;
Katsuhiko Takeuchi, Tsukuba, JP;
Kazuhiro Matsumoto, Tsukuba, JP;
Norihisa Fukaya, Tsukuba, JP;
Hiroki Koizumi, Tsukuba, JP;
Jun-Chul Choi, Tsukuba, JP;
Masahito Uchida, Ayase, JP;
Seiji Matsumoto, Minato-ku, JP;
Satoshi Hamura, Minato-ku, JP;
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, Tokyo, JP;
TOSOH CORPORATION, Shunan, JP;
Abstract
A method for producing a carbamic acid salt, including contacting a carbon dioxide-containing mixed gas having a partial pressure of carbon dioxide of 0.001 atm or more and less than 1 atm with an amino group-containing organic compound in the presence of a base in at least one organic solvent selected from the group consisting of an organic solvent having 2 or more and 8 or less carbon atoms, and a method for producing a carbamic acid ester or a urea derivative using the carbamic acid salt.