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:
Oct. 28, 2025
Filed:
Dec. 24, 2019
Applicant:
Sumitomo Chemical Company, Limited, Tokyo, JP;
Inventors:
Assignee:
SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01F 7/02 (2022.01); H01M 50/431 (2021.01); H01M 50/443 (2021.01); H01M 50/449 (2021.01);
U.S. Cl.
CPC ...
C01F 7/02 (2013.01); H01M 50/431 (2021.01); H01M 50/443 (2021.01); H01M 50/449 (2021.01); C01P 2004/51 (2013.01); C01P 2004/61 (2013.01); C01P 2006/12 (2013.01);
Abstract
Disclosed is alumina having a water desorption index H (=(V−V)÷V) of 0.15 or less in a water adsorption/desorption isotherm at 25° C., where Vrepresents a water adsorption amount [mg/g] per 1 g of alumina in the desorption isotherm at a relative water vapor pressure of 0.5, Vrepresents a water adsorption amount [mg/g] per 1 g of alumina in the adsorption isotherm at a relative water vapor pressure of 0.5, and Vrepresents a water adsorption amount [mg/g] per 1 g of alumina in the adsorption isotherm at a relative water vapor pressure of 0.9.