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:
Apr. 30, 2019
Filed:
Feb. 02, 2015
Indian Council of Medical Research, New Delhi, IN;
All India Institute of Medical Sciences, New Delhi, IN;
Pratik Kumar, New Delhi, IN;
Satya Pal Lochab, New Delhi, IN;
Dinakar Kanjilal, New Delhi, IN;
Shaila Bahl, New Delhi, IN;
All India Institute of Medical Sciences, New Delhi, IN;
Indian Council of Medical Research, New Delhi, IN;
Abstract
This invention relates to a thermoluminescent phosphor for the measurement of low radiation doses, including calcium sulphate (CaSO), Dysprosium (Dy) and manganese (Mn), wherein Dy and Mn are present as dopants. A process for the preparation of a thermoluminescent phosphor is also provided. The process includes the steps of: separately dissolving calcium sulphate (CaSO4), Dysprosium chloride (DyCh) and Manganese chloride (MnC) in hot concentrated sulphuric acid, to obtain sulphuric acid solutions of CaSO4, DyCb and MnCb; mixing the solutions; and followed by slow evaporation of the solvent to obtain a powder of microcrystalline phosphor of CaSO4:Dy, Mn.