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:
Dec. 25, 2012
Filed:
Aug. 16, 2006
Hitoshi Kihara, Chiba, JP;
Shigeru Hayashida, Kofu, JP;
Takashi Kambe, Tsuchiura, JP;
Hiroshi Kawakami, Tsuchiura, JP;
Shigeyoshi Arai, Tokyo, JP;
Hitoshi Kihara, Chiba, JP;
Shigeru Hayashida, Kofu, JP;
Takashi Kambe, Tsuchiura, JP;
Hiroshi Kawakami, Tsuchiura, JP;
Shigeyoshi Arai, Tokyo, JP;
Taiyo Nippon Sanso Corporation, Tokyo, JP;
Abstract
The method for concentrating an oxygen isotope or isotopes of the present invention combines the step of concentratingO and/or the step of depletingO that utilizes photodissociation of ozone by a laser beam with an oxygen distillation step that concentrates the oxygen isotope. At this time, it is preferable to carry out a step of isotope scrambling in addition to the above. When both a step of concentratingO and a step of depletingO are carried out, whichever thereof may be done first prior to the other. Also these steps may be placed either before or after the oxygen distillation step. Moreover, at least one of said oxygen distillation step, the concentratingO step, the depletingO step and the isotope scrambling step is preferably carried out twice or more.