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:
Apr. 21, 2009
Filed:
Jun. 30, 2003
Gerhard Keller, Saint-Maur-des-Fosses, FR;
Mary Jane New, Royston, GB;
Kerim Yasan Arda, Cambridge, GB;
Philip John Rawlins, Chesterton, GB;
Allan Carmichael, Orwell, GB;
Gerhard Keller, Saint-Maur-des-Fosses, FR;
Mary Jane New, Royston, GB;
Kerim Yasan Arda, Cambridge, GB;
Philip John Rawlins, Chesterton, GB;
Allan Carmichael, Orwell, GB;
Essilor International, Charenton le Pont, FR;
Abstract
A process for making a mould piece having a main curved surface bearing an utilitary microstructure which comprises transferring a utilitary microstructure from a master piece main surface to a main surface of a flat cured elastomeric film; pressing the cured elastomeric film and a master article against each other so as to conform the overall shape of said cured elastomeric film to the curved shape of the main surface of the master article and to spread over a curable coating composition between the curved main surface of the master article and the main surface bearing the replica of the said utilitary microstructure of the cured elastomeric film; curing the coating composition; removing the cured elastomeric film and depositing a layer of a metal or a metallic alloy on the exposed main surface of the hard coating of the master article; and recovering said metal or metallic alloy layer to obtain a mould piece having a curved main surface bearing a replica of said transferred utilitary microstructure.