Patent · US Active

Laser ablation for the environmentally beneficial removal of surface coatings

US9895771B2 · kind B2 · utility

4Cited by

144References

26Claims

0Family size

Assignee

General Lasertronics Corporation · US

Inventors

James W. Thomas · Sunnyvale, US
Mitchell R. Wool · Sunnyvale, US
Robert L. Cargill · San Jose, US

Key dates

Filing date	Feb 28, 2013
Grant date	Feb 20, 2018
Priority date	—
Expiry date	Jun 10, 2034

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23K2101/34
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A laser-based method of removing a coating from a surface comprises directing a laser pulse to a first position on the surface, removing the coating from the first position by rapidly elevating a surface temperature of the first position using the laser pulse and thereby disassociating the coating from the surface and collecting the disassociated coating. In some embodiments, the coating comprises an environmentally harmful substance such as Hexavalent Chromium. In some embodiments, the coating comprises Diamond-Like Carbon (DLC), Vitrified Contaminant Material (CMAS). The disassociated coating is collected by a waste collector.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.