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:
Sep. 21, 2004
Filed:
Dec. 08, 2003
Applicant:
Inventors:
Assignee:
Essilor International Compagnie Generale d'Optique, Charenton cedex, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
C08F / ;
Abstract
The invention is a composition comprising: 40 to 95 parts by weight of one or several monomers (I) of formula (a) wherein: R and R represent H or CH; A represents a divalent radical of formula (b) or (c) wherein m and m represent each an integer ranging between 2 and 6; and 5 to 50 parts by weight of a monomer (II) comprising at least a urethane unit and at least two (meth)acrylate functions. The invention is useful for making optical and ophthalmic articles.
Richard, Gilles. (2004). Polymerisable compositions for making transparent polymer substrates, resulting transparent polymer substrates and uses thereof in optics (U.S. Patent No. 6794474). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6794474
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile