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:
Jun. 13, 2023
Filed:
Dec. 09, 2020
Applicant:
Matsutani Chemical Industry Co., Ltd., Itami, JP;
Inventor:
Ryosuke Nakagawa, Osaka, JP;
Assignee:
MATSUTANI CHEMICAL INDUSTRY CO., LTD., Itami, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07H 3/02 (2006.01);
U.S. Cl.
CPC ...
C07H 3/02 (2013.01); C07B 2200/13 (2013.01);
Abstract
High-purity hydrous D-allose crystals and a method of efficiently obtaining the crystals are provided. To a D-allose-containing solution having a purity of D-allose of at least 80% (g/g) in a solute, in a metastable region in a supersaturated state of 30° C. or less, D-allose seed crystals are added. Then, the temperature of the solution is lowered by 10° C. or more for cooling and crystallization to initially obtain 'hydrous D-allose crystals', and the crystallization water thereof is removed in a specified temperature zone to obtain novel 'anhydrous D-allose crystals'.