Improvements introduced into the object of main Patent No. 538.673 by: procedure for giving different tones to silver yellow in silk screen printing, graphic arts and kiln-treated articles.

摘要

The purpose of the present certificate of addition is to be able to give different tones to golden yellows. Once the glass is suitably prepared, silver nitrate is applied to it in the quantity suitably created, passing it through the kiln at temperatures of 580 degree C to 620 degree C.