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:
Sep. 23, 2014
Filed:
May. 24, 2013
Daigo Kato, Tokyo, JP;
Masatoshi Kato, Nakatsugawsa, JP;
Other;
Abstract
Provided is a method for disposal of radioactive waste which can reduce the radiation level until the waste can be reused as landfill or the like and which prevents the leakage of radiation nuclides in the ground. The method includes the following: a primary treatment step of turning the radioactive waste into a radioactive waste (primary treated waste) which has a radiation level equal to or less than a reference value via a radiation shielding agent composed of or predominantly composed of a Ca-based inorganic compound; and a secondary treatment step of heating to melt the primary treated waste and thereafter cooling the same to glass granules, and then sealing radioactive nuclides in the glass body.