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:
Apr. 30, 2002
Filed:
May. 26, 2000
Uwe Kolberg, Mainz-Kastel, DE;
Ute Wölfel, Mainz, DE;
Magdalena Winkler-Trudewig, Mainz, DE;
Nicole Surges, Bingen, DE;
Schott Glas, Mainz, DE;
Abstract
The invention relates to lead-free optical glasses having a refractive index n of from 1.52 to 1.58, an Abbe number v of from 50 to 57 and a negative partial dispersion &Dgr;P of <−0.0090, having a composition (in % by weight, based on oxide) of SiO >15-25; B O 45-55; Al O 8-13; CaO 2-8; ZnO 0-5; with CaO+ZnO 2-10; Li O 0-4; Na O 0-4; K O 0-4; with Li O+Na O+K O 3-8; La O 0-14; Nb O 0-4.8; Ta O >10-17; with Ta O +Nb O >10-17; SnO 0-2; ZrO 0-7; with Ta O +ZrO >10-<18.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile