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:
Jul. 28, 2026
Filed:
Jul. 03, 2020
Sekisui Chemical Co., Ltd., Osaka, JP;
Kanetomo Sato, Tokyo, JP;
Norio Numata, Tokyo, JP;
SEKISUI CHEMICAL CO., LTD., Osaka, JP;
Abstract
Provided is a method for determining origin of carbon source of chemical substance, which makes it possible to determine whether resource-recycled carbon is used as a carbon raw material from a chemical substance in various goods. The method for determining origin of carbon source of chemical substance includes: a step Sof acquiring a carbon-14 content rate Rof a standard chemical substance having carbon element in which carbon has been recycled as a resource; a step Sof acquiring a carbon-14 content rate Rof a chemical substance to be identified; a step Sof calculating a ratio (R/R) of the content rate Rto the content rate R; and a step Sof determining that a carbon raw material in the chemical substance to be identified contains resource-recycled carbon based on the ratio (R/R).