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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 12590075 B1

PDFFull Text
Date of Patent:
Mar. 31, 2026

Filed:

Dec. 28, 2022

Refining method

Applicant:

Ngk Insulators, Ltd., Nagoya, JP;

Inventors:

Norimitsu Tohnai, Suita, JP;

Daiki Kato, Nagoya, JP;

Yoshio Kondo, Nagoya, JP;

Kazunari Yamada, Nagoya, JP;

Assignee:

NGK INSULATORS, LTD., Nagoya, JP;

Attorney:

BURR PATENT LAW, PLLC

Primary Examiner:

Kyle A Purdy

Int. Cl.
CPC ...
C07D 277/56 (2006.01); C07C 51/43 (2006.01); C07C 227/42 (2006.01); C07D 223/26 (2006.01); C30B 7/02 (2006.01); C07D 277/30 (2006.01);
U.S. Cl.
CPC ...
C07D 277/56 (2013.01); C07C 51/43 (2013.01); C07C 227/42 (2013.01); C07D 223/26 (2013.01); C30B 7/02 (2013.01); C07B 2200/13 (2013.01); C07D 277/30 (2013.01);
Abstract

A refining method according to the present invention is a refining method for crystallizing a compound with at least one crystal form, including: setting, as a target wavelength, a specific infrared wavelength at which a specific crystal form precipitates from a solution of the compound dissolved in a solvent; and using an infrared radiation apparatus capable of emitting infrared radiation including the target wavelength to evaporate the solvent and precipitate the specific crystal form while irradiating the solution with infrared radiation including the target wavelength. The specific infrared wavelength is preferably set as the target wavelength based on an infrared absorption spectrum of the crystal form and the dissolution rate of the compound in the solvent.

Find Patent Forward Citations

Tohnai, Norimitsu. (2026). Refining method (U.S. Patent No. 12590075). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12590075

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

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