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:
Oct. 16, 2012
Filed:
Feb. 24, 2010
Dirk Burrowes, Fitchburg, MA (US);
Dirk Burrowes, Fitchburg, MA (US);
Vinyl Technologies, Inc., Fitchburg, MA (US);
Abstract
An apparatus for removing heavy metals from a thin film stack. A glass or plastic substrate has a front surface and a back surface and a heavy metal thin film is deposited on the back surface. A laser is provided for generating high density radiation. A scanning means directs the high density radiation through the substrate so that the high density radiation impinges upon the heavy metal thin film. The substrate is disposed in contacting relation to a flowing liquid and a liquid bath is provided for containing the flowing liquid and collecting heavy metal that is ablated by the high density radiation. The heavy metals are filtered from the liquid bath. The same parts can also remove heavy metals from both sides of a substrate or may be used to remove only peripheral edges of a thin film stack.