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. 20, 2020
Filed:
Jun. 20, 2016
Applicants:
Katsuyoshi Kondoh, Osaka, JP;
Nippon Steel & Sumikin Cement Co., Ltd., Hokkaido, JP;
Inventors:
Katsuyoshi Kondoh, Osaka, JP;
Hitoshi Kanbara, Hokkaido, JP;
Tomohiro Kanazawa, Hokkaido, JP;
Seunghyun Na, Hokkaido, JP;
Nana Nishikawa, Hokkaido, JP;
Assignees:
Other;
NIPPON STEEL CEMENT CO., LTD., Hokkaido, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B 20/00 (2006.01); C04B 14/04 (2006.01); C04B 14/30 (2006.01); C04B 28/02 (2006.01); G21F 9/34 (2006.01); C04B 111/00 (2006.01); C04B 111/70 (2006.01);
U.S. Cl.
CPC ...
C04B 20/004 (2013.01); C04B 14/04 (2013.01); C04B 14/30 (2013.01); C04B 14/304 (2013.01); C04B 28/02 (2013.01); G21F 9/34 (2013.01); C04B 2111/00862 (2013.01); C04B 2111/70 (2013.01);
Abstract
The cementitious material for a radioactive waste disposal facility includes base cement, and porous and amorphous silica powder. The amount of the silica powder in the entire cementitious material ranges from 35% to 65% on a mass basis.