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:
Nov. 24, 2020
Filed:
Nov. 21, 2019
Essilor International, Charenton-le-Pont, FR;
Brian McCrady, Dallas, TX (US);
Alain Mathieu, Dallas, TX (US);
Cesar Maksoud, Dallas, TX (US);
Todd Lane Jacobs, Dallas, TX (US);
Essilor International (Compagnie Generale d'Optique), Charenton-le-Pont, FR;
Abstract
The invention relates to a method of retrofitting a vacuum deposition chamber of an apparatus for coating optical substrates, the vacuum deposition chamber comprising a second resistance evaporator crucible. The method comprises installing a resistance evaporator comprising a crucible into the operational vacuum deposition chamber such that the crucible is disposed above the vacuum deposition chamber floor, and such that the second resistance evaporator crucible is closer to the vacuum deposition chamber floor than the installed crucible.