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:
Jan. 21, 2025
Filed:
Jan. 13, 2020
Applicant:
Corning Incorporated, Corning, NY (US);
Inventors:
Timothy James Kiczenski, Corning, NY (US);
Nadja Teresia Lönnroth, Helsinki, FI;
Assignee:
CORNING INCORPORATED, Corning, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C 4/06 (2006.01); C03C 3/097 (2006.01); C03C 3/11 (2006.01);
U.S. Cl.
CPC ...
C03C 4/06 (2013.01); C03C 3/11 (2013.01);
Abstract
A photochromic glass, comprising: (i) a glass matrix that, comprising in mol percent (mol %) based on oxides: 66 mol %≤SiO≤75 mol %; 8 mol %≤BO≤13 mol %; mol %≤AlO≤7 mol %; 1.5 mol %≤PO≤6 mol %, mol %≤NaO≤5.5 mol %; 3 mol %≤KO≤9.5 mol %; 0 mol %≤MgO≤4 mol %; 0 mol %≤LiO≤0.05 mol %; 0 mol %≤BaO≤0.05 mol %; 0 mol %≤CaO≤0.05 mole %; wherein the amount of (LiO+BO+CaO≤0.1 mole %); and (ii)) a plurality of photochromic agents, comprising in mol percent (%) with respect to the glass matrix: 0.07%≤Ag≤0.15%; 0.14%≤Cl≤0.25%; 0.025%≤Br≤0.04%; 0.0065%≤CuO≤0.015%, and wherein CuO/Ag≤0.22.