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:
Aug. 18, 2009
Filed:
Aug. 05, 2005
Robert A. Bellman, Painted Post, NY (US);
Ljerka Ukrainczyk, Painted Post, NY (US);
Jose M. Quintal, Campbell, NY (US);
Paul A. Sachenik, Corning, NY (US);
Robert A. Bellman, Painted Post, NY (US);
Ljerka Ukrainczyk, Painted Post, NY (US);
Jose M. Quintal, Campbell, NY (US);
Paul A. Sachenik, Corning, NY (US);
Corning Incorporated, Corning, NY (US);
Abstract
A substrate includes an opaque chrome coating on a surface of the substrate dry-etched to form an aperture, wherein chrome in the aperture is below detectable limit. A method of forming an opaque chrome coating on a substrate includes depositing an initial thickness of the opaque chrome coating on the substrate without ion-assist or with undetectable ion-assist and depositing the remainder of the opaque chrome coating with or without ion-assist. In one embodiment the invention is directed to an apertured optical element having a substrate transmissive to light and an opaque chrome coating on the substrate defining an aperture. Three- and four-layer opaque coatings of various materials are disclosed, including three-layer chrome/chrome oxide/chrome coatings.