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:
May. 11, 2010
Filed:
Dec. 30, 2005
Applicants:
Joel Kauffman, Wayne, PA (US);
Peter T. Litak, Schwenksville, PA (US);
Martin Rickwood, Clarks Green, PA (US);
Inventors:
Joel Kauffman, Wayne, PA (US);
Peter T. Litak, Schwenksville, PA (US);
Martin Rickwood, Clarks Green, PA (US);
Assignee:
Essilor International Compagnie Generale d'Optique, Charenton-le-Pont, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 263/62 (2006.01); B29D 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Compounds that absorb ultraviolet light 380 nm to 400 nm range but avoid absorption in the blue light range, thereby imparting yellowness, i.e., 410-420 nm have suitable refractive characteristics useful in the preparation of optical resins or plastics suitable, for example, for the manufacture of ophthalmic lenses. Methods for making the compounds, optic lenses containing the compounds, and methods for making these are also described.