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:
Mar. 28, 2000
Filed:
May. 05, 1998
Applicant:
Inventor:
Jitendra Singh Goela, Andover, MA (US);
Assignee:
CVD, Inc., Woburn, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23C / ;
U.S. Cl.
CPC ...
264 39 ; 264-121 ; 264 401 ; 264 81 ; 249115 ;
Abstract
Articles having at least one precision replicated surface are formed by chemical vapor deposition on a substrate surface which has been precision shaped and finished as the converse of the desired precision surface of the article. The substrate surface is provided with a thin release coating which adheres to the substrate when the article is removed thereby allowing the substrate to be reused. The method is particularly advantageous for forming the interior surfaces of domes and asymmetrical optical surfaces of zinc sulfide.