Patents by Inventor Ethan A. McGrath

Ethan A. McGrath has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Laser marking method and system and laser marked object
    Patent number: 10315274
    Abstract: A laser marking method and system, and laser marked object are disclosed. The method includes directing a pulsed laser beam towards an object such that an interface between an oxidized layer and non-oxidized substrate is in a mark zone of the pulsed laser beam, and scanning the pulsed laser beam across the object in a predetermined pattern to create a mark having an L value of less than 40 and a surface roughness that is substantially unchanged compared to adjacent unmarked areas. The system includes a fiber laser generating amplified pulses that are directed towards a galvo-scanner and focusing optic, while the object includes an oxidized surface layer, an underlying non-oxidized substrate, and a mark having an L value of less than 40 with substantially unchanged roughness features.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: June 11, 2019
    Assignee: nLIGHT, Inc.
    Inventors: Xiaojun Li, R. Kirk Price, Jason N. Farmer, Ethan A. McGrath
  • LASER MARKING METHOD AND SYSTEM AND LASER MARKED OBJECT
    Publication number: 20160263701
    Abstract: A laser marking method and system, and laser marked object are disclosed. The method includes directing a pulsed laser beam towards an object such that an interface between an anodized layer and non-anodized substrate is in a mark zone of the pulsed laser beam, and scanning the pulsed laser beam across the object in a predetermined pattern to create a mark having an L value of less than 35 and a surface roughness that is substantially unchanged compared to adjacent unmarked areas. The system includes a fiber laser generating amplified pulses that are directed towards a galvo-scanner and focusing optic, while the object includes an anodized surface layer, an underlying non-anodized substrate, and a mark having an L value of less than 35 with substantially unchanged roughness features.
    Type: Application
    Filed: February 10, 2016
    Publication date: September 15, 2016
    Applicant: nLIGHT Photonics Corporation
    Inventors: Xiaojun Li, R. Kirk Price, Jason N. Farmer, Ethan A. McGrath
  • Laser marking method and system
    Patent number: 9290008
    Abstract: A laser marking method and system, and laser marked object are disclosed. The method includes directing a pulsed laser beam towards an object such that an interface between an oxidized layer and non-oxidized substrate is in a mark zone of the pulsed laser beam, and scanning the pulsed laser beam across the object in a predetermined pattern to create a mark having an L value of less than 40 and a surface roughness that is substantially unchanged compared to adjacent unmarked areas. The system includes a fiber laser generating amplified pulses that are directed towards a galvo-scanner and focusing optic, while the object includes an oxidized surface layer, an underlying non-oxidized substrate, and a mark having an L value of less than 40 with substantially unchanged roughness features.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: March 22, 2016
    Assignee: nLIGHT Photonics Corporation
    Inventors: Xiaojun Li, Kirk Price, Jason Farmer, Ethan McGrath