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.

Date of Patent:
Nov. 10, 2026

Filed:

Feb. 18, 2022
Applicant:

Mitsubishi Heavy Industries, Ltd., Tokyo, JP;

Inventors:

Wataru Matsubara, Tokyo, JP;

Yoshio Seiki, Tokyo, JP;

Minoru Genta, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 11/24 (2006.01); B01D 3/14 (2006.01); B01J 19/00 (2006.01); B01J 19/24 (2006.01); C07C 29/128 (2006.01); C07C 51/09 (2006.01);
U.S. Cl.
CPC ...
C08J 11/24 (2013.01); B01D 3/143 (2013.01); B01J 19/0006 (2013.01); B01J 19/245 (2013.01); C07C 29/1285 (2013.01); C07C 51/09 (2013.01); B01J 2219/0004 (2013.01); B01J 2219/00184 (2013.01); C08J 2367/02 (2013.01);
Abstract

To improve yield of monomers. A monomer production system includes a dissolving unit that stores therein a polyester solution, a first reaction unit into which the polyester solution and a reaction solvent are introduced and that depolymerizes the polyester in the polyester solution and extracts a first depolymerized polyester containing the depolymerized polyester into the reaction solvent, a second reaction unit that further depolymerizes the first depolymerized polyester and generates a second depolymerized polyester that is the further depolymerized first depolymerized polyester, a separation unit that separates the reaction solvent in which the second depolymerized polyester is dissolved into the reaction solvent, a carboxylic acid-derived monomer, an alcohol component monomer, and residual substances that are components other than the reaction solvent, the carboxylic acid-derived monomer, and the alcohol component monomer, and contain oligomers, and inlet pipes that introduce the carboxylic acid-derived monomer and the residual substances into the dissolving unit.


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Matsubara, Wataru. (2026). Monomer production system and monomer production method (U.S. Patent No. 12790457). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12790457

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