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:
Jan. 06, 2009
Filed:
Oct. 17, 2000
Michael O. Okoroafor, Export, PA (US);
Robert A. Smith, Murrysville, PA (US);
Marvin J. Graham, Monroeville, PA (US);
Robert D. Herold, Monroeville, PA (US);
Michael O. Okoroafor, Export, PA (US);
Robert A. Smith, Murrysville, PA (US);
Marvin J. Graham, Monroeville, PA (US);
Robert D. Herold, Monroeville, PA (US);
PPG Industries Ohio, Inc., Cleveland, OH (US);
Abstract
The present invention is directed to a novel polymerizable organic composition comprising one or more radically polymerizable monomers with at least one radically polymerizable monomer having at least two (meth)acryloyl groups that have backbone linkages selected from thiourethane linkages, dithiourethane linkages, combinations of thiourethane linkages and dithiourethane linkages. The present invention is also directed to polymerizates prepared from the polymerizable organic composition, shaped articles prepared from the polymerizable compositions, and photochromic articles that may be prepared from the polymerizable organic composition of the present invention.