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:
Mar. 12, 1996
Filed:
Mar. 19, 1993
Masami Matsuda, Hitachi, JP;
Takashi Nishi, Hitachi, JP;
Makoto Kikuchi, Hitachi, JP;
Tatsuo Izumida, Katsuta, JP;
Shin Tamata, Ooarai, JP;
Yoshimasa Kiuchi, Katsuta, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Engineering & Services Co., Ltd., Ibaraki, JP;
Abstract
An object of the present invention is to improve retainability (distribution coefficient) for C-14 of a radioactive waste solidified body. The waste is solidified with a solidification agent containing a soluble substance which yields an insoluble substance by a reaction with carbonic ions, insoluble carbonates, or a mixture of the above substances. And, as for a pre-treatment, the soluble substance which yields an insoluble substance by a reaction with carbonic ions is previously reacted with liquid waste, and subsequently the solidification is performed. The retainability (distribution coefficient) for C-14 of the solidified body of the waste increases about one order.