Invention Grant
- Patent Title: Crystal glass having refractive index higher than 1.53 without a content of compounds of lead, barium and arsenic
- Patent Title (中): 折射率高于1.53的水晶玻璃，不含铅，钡和砷化合物
-
Application No.: US13877313Application Date: 2011-09-01
-
Publication No.: US08877663B2Publication Date: 2014-11-04
- Inventor: Miroslav Rada , Kv{hacek over (e)}ta Sázavová , Jan Ko{hacek over (r)}enský , Ji{hacek over (r)}i Vav{hacek over (r)}ena
- Applicant: Miroslav Rada , Kv{hacek over (e)}ta Sázavová , Jan Ko{hacek over (r)}enský , Ji{hacek over (r)}i Vav{hacek over (r)}ena
- Applicant Address: CZ Jablonec nad Nisou
- Assignee: Preciosa A.S.
- Current Assignee: Preciosa A.S.
- Current Assignee Address: CZ Jablonec nad Nisou
- Agency: Dykema Gossett PLLC
- International Application: PCT/CZ2011/000085 WO 20110901
- International Announcement: WO2013/029573 WO 20130307
- Main IPC: C03C3/093
- IPC: C03C3/093 ; C03C4/00 ; C03C3/097
Abstract:
This invention relates to a crystal glass having a refractive index higher than 1.53 and a high mechanical strength, free of any content of compounds of lead, barium and arsenic and guaranteeing maximum safety for health, which consists in that it comprises by weight: 55-70% SiO2, 0.05-3.5% Li2O, 2-15% Na2O, more than 3% and less than 5% or more than 15% and less than 19% K2O, 5 to 10% CaO, more than 1% and less than 4% or more than 7% and less than 8% ZnO, 0.1-3.5% B2O3, 0.1-3.5% Al2O3, 0.1-3.5% TiO2, less than 3.5% ZrO2, 0.05-1.5% Gd2O,3 0.05-1% P2O5, 0.1-1% Sb2O3.
Public/Granted literature
Information query
