Luminescent ceramic material of cadmium, boron, and manganous oxides

Claim 1

A METHOD OF MAKING A LUMINESCENT CERAMIC PRODUCT CONSISTING ESSENTIALLY OF A MULTIPLICITY OF CRYSTALS OF A CADMIUM BORATE DISPERSED IN A GLASSY MATRIX, WHICH COMPRISES MELTING BATCH MATERIALS AND FORMING A GLASS CONSISTING ESSENTIALLY OF CDO, B2O3 AND MNO IN AN AMOUNT FROM A TRACE TO 3 WEIGHT PERCENT OF SAID GLASS, SAID MELTING AND GLASS FORMATIONS BEING EFFECTED UNDER REDUCING CONDITIONS EFFECTIVE FOR REDUCING MANGANESE OXIDES TO MNO SO THAT A SUBSTANTIALLY COLORLESS GLASS IS OBTAINED; HEATING SAID GLASS AT A CRYSTALLIZATION TEMPERATURE ABOVE ITS ANNEALING POINT TEMPERATURE UNTIL A DESIRED PROPORTION OF CRYSTALLINE MATERIAL COMPRISING CADMIUM BORATE CRYSTALS SELECTED FROM THE GROUP CONSISTING OF 3CDO-2B2O3 AND 2CDO-3B2O6 ARE CYRSTALLIZED IN SITU FROM SAID GLASS, THEREBY REDUCING SAID CERAMIC PRODUCT OF THE FOREGOING DESCRIPTION.

Claim 2

A METHOD OF MAKING A LUMINESCENT CERAMIC PRODUCT CONSISTING ESSENTIALLY OF A MULTIPLICITY OF CRYSTALS OF A CADMIUM BORATE DISPERSED IN A GLASSY MATRIX, WHICH COMPRISES MELTING BATCH MATERIALS AND FORMING A GLASS CONSISTING ESSENTIALLY OF CDO, B2O3 AND MNO IN AN AMOUNT FROM A TRACE TO 3 WEIGHT PERCENT OF SAID GLASS, SAID MELTING AND GLASS FORMATIONS BEING EFFECTED UNDER REDUCING CONDITIONS EFFECTIVE FOR REDUCING MANGANESE OXIDES TO MNO SO THAT A SUBSTANTIALLY COLORLESS GLASS IS OBTAINED; HEATING SAID GLASS AT A CRYSTALLIZATION TEMPERATURE ABOVE ITS ANNEALING POINT TEMPERATURE UNTIL A DESIRED PROPORTION OF CRYSTALLINE MATERIAL COMPRISING CADMIUM BORATE CRYSTALS SELECTED FROM THE GROUP CONSISTING OF 3CDO-2B2O3 AND 2CDO-3B2O6 ARE CYRSTALLIZED IN SITU FROM SAID GLASS, THEREBY REDUCING SAID CERAMIC PRODUCT OF THE FOREGOING DESCRIPTION.