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:
Dec. 05, 2006
Filed:
May. 13, 2005
Walter Haimerl, Munich, DE;
Helmut Altheimer, Baisweil-Lauchdorf, DE;
Gregor Esser, Munich, DE;
Edda Wehner, Emmering, DE;
Andrea Welk, Munich, DE;
Walter Haimerl, Munich, DE;
Helmut Altheimer, Baisweil-Lauchdorf, DE;
Gregor Esser, Munich, DE;
Edda Wehner, Emmering, DE;
Andrea Welk, Munich, DE;
Rodenstock GmbH, Munich, DE;
Abstract
A double progressive spectacle lens having a prefabricated progressive surface and a second progressive surface for correcting a spherical ametropia or a cylindrical ametropia, in which the surface properties of the progressive surface in the vicinity of the principal line of sight are asymmetric, the asymmetry being determined by the symmetry factor S, which is determined in relation to the level A by the ratio of the smaller to the larger horizontal distance between the principal line of sight and the location at which the surface astigmatism in the horizontal section reaches the value A [dpt].
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile