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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.:

US 12338047 B1

PDFFull Text
Date of Patent:
Jun. 24, 2025

Filed:

Aug. 11, 2021

Multi-layer container, method for producing same, and method for producing reclaimed polyester

Applicant:

Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;

Inventors:

Kosuke Otsuka, Hiratsuka, JP;

Masayuki Daito, Hiratsuka, JP;

Takumi Yamada, Hiratsuka, JP;

Assignee:

Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;

Attorney:

Fitch, Even, Tabin and Flannery LLP

Primary Examiner:

James C Yager

Int. Cl.
CPC ...
B65D 65/40 (2006.01); B29C 49/06 (2006.01); B29C 49/22 (2006.01); B32B 27/08 (2006.01); B32B 27/20 (2006.01); B32B 27/34 (2006.01); B32B 27/36 (2006.01); B29K 67/00 (2006.01); B29K 77/00 (2006.01); B29L 31/00 (2006.01);
U.S. Cl.
CPC ...
B65D 65/40 (2013.01); B29C 49/06 (2013.01); B29C 49/22 (2013.01); B32B 27/08 (2013.01); B32B 27/20 (2013.01); B32B 27/34 (2013.01); B32B 27/36 (2013.01); B29K 2067/00 (2013.01); B29K 2077/00 (2013.01); B29K 2995/0058 (2013.01); B29L 2031/712 (2013.01); B32B 2250/24 (2013.01); B32B 2307/4026 (2013.01); B32B 2307/714 (2013.01); B32B 2439/00 (2013.01);
Abstract

Provided is a multilayer container having a polyester layer containing a polyester resin (X), and a polyamide layer containing a polyamide resin (Y) and a yellowing inhibitor (A). The content of the polyamide resin (Y) is from 0.05 to 7.0 mass % relative to the total amount of all polyamide layers and all polyester layers. The yellowing inhibitor (A) is a dye. The content of the yellowing inhibitor (A) is from 400 to 800 ppm relative to the polyamide layer. An L* of the multilayer container is 87.5 or greater.

Find Patent Forward Citations

Otsuka, Kosuke. (2025). Multi-layer container, method for producing same, and method for producing reclaimed polyester (U.S. Patent No. 12338047). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12338047

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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