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:
May. 09, 2006
Filed:
Jun. 06, 2003
Applicants:
Karin Naumann, Ober-Olm, DE;
Uwe Kolberg, Mainz-Kastel, DE;
Frank-thomas Lentes, Bingen, DE;
Inventors:
Assignee:
Schott Glas, Mainz, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C 3/97 (2006.01); C03C 3/87 (2006.01); C03C 4/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention describes a lead-free and arsenic-free special short flint glass with a refractive index 1.60≦n≦1.65, an Abbe number of 41≦ν≦52, a relative partial dispersion 0.551≦P≦0.570 in the blue spectral region, a relative partial dispersion 0.507≦P≦0.525 in the red spectral region, a negative deviation of the relative partial dispersion from the normal line ΔP≦−0.0045 and an improved chemical resistance which has the following composition (in % by weight):