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:
Jun. 06, 2006
Filed:
Nov. 10, 2003
Tryggvi Emilsson, Urbana, IL (US);
Timothy R. Brumleve, Urbana, IL (US);
Chakrapani V. Varanasi, Dayton, OH (US);
Tryggvi Emilsson, Urbana, IL (US);
Timothy R. Brumleve, Urbana, IL (US);
Chakrapani V. Varanasi, Dayton, OH (US);
Advanced Lighting Technologies, Inc., Solon, OH (US);
Abstract
The present invention includes barrier coatings and methods for reducing or preventing chemical reaction between the discharge medium and arc tube wall material in discharge lamps. The barrier coatings comprise nitride layer exposed to the discharge medium formed from one or more of aluminum, boron, scandium, yttrium, or the lanthanides. In another aspect, the present invention includes methods of forming coatings on the inner wall of arc tubes by introducing two or more precursors into the arc tube chamber and pyrolitically reacting the precursors to form layers for the coating.