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:
Jun. 27, 2023
Filed:
Mar. 09, 2018
Hirosaki University, Aomori, JP;
Shinji Tokonami, Aomori, JP;
HIROSAKI UNIVERSITY, Aomori, JP;
Abstract
A radioactive fine particle manufacturing system and method to manufacture physically stable radioactive fine particles, and which enables performance evaluation of a radioactivity measuring instrument employing a physical indicator, by controlling radioactivity concentration, and facilitating performance evaluation of the overall radioactivity measuring instrument. The radioactive fine particle manufacturing system includes a radioactive gas generating system, a specific particle-sized aerosol generating system and a mixing chamber, to manufacture radioactive fine particles employing natural radioactive nuclides, and uses.Rn to manufacture radioactive fine particles using physically stable progeny nuclides. In the mixing chamber, the progeny nuclides are caused to attach only to an aerosol having a specific particle size, to generate radioactive fine particles having a specific particle size.