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:
Nov. 18, 2025
Filed:
Dec. 23, 2020
Applicant:
Daicel Corporation, Osaka, JP;
Inventors:
Assignee:
DAICEL CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 8/34 (2006.01); A61Q 19/00 (2006.01); B01D 3/42 (2006.01); C07C 29/141 (2006.01); C07C 29/60 (2006.01); C07C 29/80 (2006.01); C07C 29/84 (2006.01); C07C 31/20 (2006.01);
U.S. Cl.
CPC ...
A61K 8/345 (2013.01); A61Q 19/00 (2013.01); A61Q 19/007 (2013.01); B01D 3/4205 (2013.01); C07C 29/141 (2013.01); C07C 29/60 (2013.01); C07C 29/80 (2013.01); C07C 29/84 (2013.01); C07C 31/207 (2013.01); A61K 2800/10 (2013.01);
Abstract
Provided is a method capable of yielding high-purity 1,3-butylene glycol having a very low content of a high boiling point component and a low dry point, with a high recovery ratio. A method for producing 1,3-butylene glycol to yield purified 1,3-butylene glycol from a reaction crude liquid containing 1,3-butylene glycol,
Shimizu, Masahiko. (2025). Method for producing 1,3-butylene glycol, and 1,3-butylene glycol product (U.S. Patent No. 12472133). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12472133
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile