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. 28, 2002
Filed:
Feb. 07, 2001
Robert Michael Atkins, Millington, NJ (US);
Arturo Hale, New York, NY (US);
Francis M Houlihan, Millington, NJ (US);
Valerie Jeanne Kuck, Upper Montclair, NJ (US);
Richard T Olsson, Lidingo, SE;
Mark Anthony Paczkowski, Andover, NJ (US);
Debra Ann Simoff, Simsburby, CT (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
This invention is predicated upon applicants' discovery that UV-induced gratings can be formed through polymer coatings that include conjugated double bonds and aromatic moieties. Coatings with low concentrations of aromatic-containing free-radical photoinitiators provide both reasonable curing speeds and sufficient transparency that gratings can be written through them. Moreover some of these aromatic-containing free-radical photoinitiators act synergistically with non-aromatic ketone photoinitiators. Advantageous aromatic-containing free-radical photoinitiator concentrations are in the range 0.01%-0.1% and preferably in the range 0.02% to 0.05%. Advantageous polymer coatings are acrylate-based coatings.