Patents by Inventor Necip Alev

Necip Alev 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).

  • Methods for producing indicia on diamonds
    Patent number: 5573684
    Abstract: A method of producing a marking on diamond, pearl, precious or semi-precious stone. For producing the marking, the region on the surface to be marked is irradiated with an ArF excimer laser whose output beam is passed through a mask which defines the marking. Identification or security marks may be created. The same process can be used to produce strong and durable extrusion dies having irregular cross sections, and cross sections which vary with depth through the die material.
    Type: Grant
    Filed: September 29, 1994
    Date of Patent: November 12, 1996
    Assignee: Harry Winston, S.A.
    Inventors: Ronald H. Winston, Necip Alev
  • Methods for producing indicia on diamonds
    Patent number: 5410125
    Abstract: A method of producing a marking on diamond, pearl, precious or semi-precious stone. For producing the marking, the region on the surface to be marked is irradiated with an ArF excimer laser whose output beam is passed through a mask which defines the marking. Identification or security marks may be created. The same process can be used to produce strong and durable extrusion dies having irregular cross sections, and cross sections which vary with depth through the die material.
    Type: Grant
    Filed: October 8, 1991
    Date of Patent: April 25, 1995
    Assignee: Harry Winston, S.A.
    Inventors: Ronald H. Winston, Necip Alev
  • Methods for producing indicia on diamonds
    Patent number: 5149938
    Abstract: A method of producing a marking on a diamond. For producing the marking, the region on the surface of the diamond which is to be marked is irradiated with an argon fluorine excimer laser whose output beam is passed through a mask which defines the marking. The diamond selectively absorbs the excimer laser radiation and undergoes a partial allotropic transformation without losing its diamond crystal lattice configuration.
    Type: Grant
    Filed: October 11, 1990
    Date of Patent: September 22, 1992
    Assignee: Harry Winston, S.A.
    Inventors: Ronald H. Winston, Necip Alev