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:
Aug. 21, 2007
Filed:
Sep. 07, 2005
Eric M. King, Pittsburgh, PA (US);
Kevin J. Stewart, Murrysville, PA (US);
Eric M. King, Pittsburgh, PA (US);
Kevin J. Stewart, Murrysville, PA (US);
Transitions Optical, Inc., Pinellas Park, FL (US);
Abstract
Describes a multifocal optical article, e.g., an ophthalmic article such as a lens, in which the article includes (1) a rigid optical substrate, e.g., a transparent polymeric substrate, such as a thermoset or thermoplastic substrate, adapted to possess at least one light influencing property on at least a portion of at least one surface of the substrate, e.g., a photochromic and/or polarizing layer, and (2) a multifocal layer of an optical quality material on said substrate having the light influencing property. Describes also the aforedescribed optical article having an abrasion-resistant coating on the multifocal layer, e.g., an abrasion-resistant coating comprising an organo silane. A method for preparing the multifocal optical article comprising curing optical quality material between a multifocal mold and a preform comprising an optical substrate possessing the light influencing property is also described.