Patents by Inventor Horia Sorin Andrei

Horia Sorin Andrei 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).

  • Method for laser marking an anodized metal surface with a desired colour
    Patent number: 9533370
    Abstract: A method for laser marking an anodized metal surface (5) with a desired color, which method comprises: providing a laser (1) for emitting a laser beam (4) comprising laser pulses having a pulse energy, a pulse width, and a pulse repetition frequency; providing a scanner (2) comprising a first mirror (6) for scanning the laser beam in a first direction (8), and a second mirror (7) for scanning the laser beam in a second direction (9); providing a lens (3) for focussing the laser beam from the laser (2) onto the anodized metal surface (5) to form a spot (31) having a spot diameter and a pulse fluence; providing a controller (11) for controlling the scanner (2) with a control signal (12); marking a plurality of lines (15) separated by a hatch distance (19) on the anodized metal surface to form a desired mark (16) by scanning the scanner (2) while pulsing the laser (1); selecting a scan speed (16), the pulse repetition frequency, and the spot diameter such that the separation (18) between consecutive spots (31) d
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: January 3, 2017
    Assignee: SPI Lasers UK Limited
    Inventors: Horia Sorin Andrei, Paul Martin Harrison
  • Method For Laser Marking An Anodized Metal Surface With A Desired Colour
    Publication number: 20160256955
    Abstract: A method for laser marking an anodized metal surface (5) with a desired colour, which method comprises: providing a laser (1) for emitting a laser beam (4) comprising laser pulses having a pulse energy, a pulse width, and a pulse repetition frequency; providing a scanner (2) comprising a first mirror (6) for scanning the laser beam in a first direction (8), and a second mirror (7) for scanning the laser beam in a second direction (9); providing a lens (3) for focussing the laser beam from the laser (2) onto the anodized metal surface (5) to form a spot (31) having a spot diameter and a pulse fluence; providing a controller (11) for controlling the scanner (2) with a control signal (12); marking a plurality of lines (15) separated by a hatch distance (19) on the anodized metal surface to form a desired mark (16) by scanning the scanner (2) while pulsing the laser (1); selecting a scan speed (16), the pulse repetition frequency, and the spot diameter such that the separation (18) between consecutive spots (31)
    Type: Application
    Filed: December 1, 2014
    Publication date: September 8, 2016
    Inventors: Horia Sorin Andrei, Paul Martin Harrison