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. 23, 2005
Filed:
Oct. 11, 2002
Qiang Zheng, Palo Alto, CA (US);
Donald Scott Nelson, San Ramon, CA (US);
Charles William Carper, Jr., Westerville, OH (US);
Manfred Melzig, Wessling, DE;
Herbert Schuster, Emmering, DE;
Herbert Zinner, Rohrbach, DE;
Qiang Zheng, Palo Alto, CA (US);
Donald Scott Nelson, San Ramon, CA (US);
Charles William Carper, Jr., Westerville, OH (US);
Manfred Melzig, Wessling, DE;
Herbert Schuster, Emmering, DE;
Herbert Zinner, Rohrbach, DE;
Rodenstock GmbH, Munich, DE;
Abstract
A high refractive index, curable, synthetic resin composition comprising a core resin composition composed of a mixture of ethylenically unsaturated compounds, and an initiation system containing both photo and thermal initiators, particularly a photochromic resin composition which further includes at least one photochromic dye. Also a curing process, which includes a combination of multi-step radiation curing and thermal annealing. Articles produced of cured composition exhibit superior physical and, in appropriate cases, photochromic properties and can be easily mass produced on a commercial scale due to short processing time and use of readily available chemicals.