Patents Assigned to Lazare Kaplan International, Inc.
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Publication number: 20160167164Abstract: A gemstone micro-inscription system, comprising an energy source, a spatial light modulator, and a control, the control controlling a spatial light pattern modulation of the spatial light modulator, wherein the spatial light modulator exposes a photoresist on the gemstone, which selectively impedes an etching process to produce a pattern on the gemstone corresponding to the spatial light modulation pattern.Type: ApplicationFiled: November 19, 2012Publication date: June 16, 2016Applicant: LAZARE KAPLAN INTERNATIONAL, INC.Inventors: Charles Rosario, William H. Moryto
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Publication number: 20140139608Abstract: A gemstone micro-inscription system, comprising an energy source, a spatial light modulator, and a control, the control controlling a spatial light pattern modulation of the spatial light modulator, wherein the spatial light modulator exposes a photoresist on the gemstone, which selectively impedes an etching process to produce a pattern on the gemstone corresponding to the spatial light modulation pattern.Type: ApplicationFiled: November 19, 2012Publication date: May 22, 2014Applicant: LAZARE KAPLAN INTERNATIONAL, INC.Inventors: Charles Rosario, William H. Moryto
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Patent number: 8319145Abstract: A gemstone micro-inscription system, comprising an energy source, a spatial light modulator, and a control, the control controlling a spatial light pattern modulation of the spatial light modulator, wherein the spatial light modulator exposes a photoresist on the gemstone, which selectively impedes an etching process to produce a pattern on the gemstone corresponding to the spatial light modulation pattern.Type: GrantFiled: July 9, 2007Date of Patent: November 27, 2012Assignee: Lazare Kaplan International, Inc.Inventors: Charles Rosario, William H. Moryto
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Patent number: 7915564Abstract: A laser energy microinscribing system, comprising a semiconductor excited Q-switched solid state laser energy source; a cut gemstone mounting system, allowing optical access to a mounted workpiece; an optical system for focusing laser energy from the laser energy source onto a cut gemstone; a displaceable stage for moving said gemstone mounting system with respect to said optical system so that said focused laser energy is presented to desired positions on said gemstone, having a control input; an imaging system for viewing the gemstone from a plurality of vantage points; and a rigid frame supporting said laser, said optical system and said stage in fixed relation, to resist differential movements of said laser, said optical system and said stage and increase immunity to vibrational misalignments. The laser energy source is preferably a semiconductor diode excited Q-switched Nd:YLF laser with a harmonic converter having an output of about 530 nm.Type: GrantFiled: September 4, 2007Date of Patent: March 29, 2011Assignee: Lazare Kaplan International, Inc.Inventors: George R. Kaplan, Avigdor Shachrai, Oded Anner, Leonid Gurvich
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Patent number: 7655882Abstract: An apparatus and method for producing an authentication certification for a gemstone, having a processor, a database coupled to the processor, in which are stored data defining laser micro-inscriptions and physical characteristics of a plurality of gemstones, a graphic user interface (GUI) for interacting with and controlling the processor, and a computer output device, presenting in human readable form, information from the database describing for a respective gemstone the laser micro-inscription and physical characteristic information. The output is suitable for authentication of a presumptive gemstone. A corresponding method generates data for the database from the gemstone, and/or authenticates a laser-microinscribed gemstone based on previously stored data.Type: GrantFiled: March 14, 2006Date of Patent: February 2, 2010Assignee: Lazare Kaplan International, Inc.Inventors: George R. Kaplan, Avigdor Shachrai, Oded Anner, Leonid Gurvich
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Publication number: 20080006615Abstract: A gemstone micro-inscription system, comprising an energy source, a spatial light modulator, and a control, the control controlling a spatial light pattern modulation of the spatial light modulator, wherein the spatial light modulator exposes a photoresist on the gemstone, which selectively impedes an etching process to produce a pattern on the gemstone corresponding to the spatial light modulation pattern.Type: ApplicationFiled: July 9, 2007Publication date: January 10, 2008Applicant: LAZARE KAPLAN INTERNATIONAL. INC.Inventors: Charles Rosario, William H. Moryto
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Patent number: 7265316Abstract: A laser energy microinscribing system, comprising a semiconductor excited Q-switched solid state laser energy source; a cut gemstone mounting system, allowing optical access to a mounted workpiece; an optical system for focusing laser energy from the laser energy source onto a cut gemstone; a displaceable stage for moving said gemstone mounting system with respect to said optical system so that said focused laser energy is presented to desired positions on said gemstone, having a control input; an imaging system for viewing the gemstone from a plurality of vantage points; and a rigid frame supporting said laser, said optical system and said stage in fixed relation, to resist differential movements of said laser, said optical system and said stage and increase immunity to vibrational misalignments. The laser energy source is preferably a semiconductor diode excited Q-switched Nd:YLF laser with a harmonic converter having an output of about 530 nm.Type: GrantFiled: January 26, 2004Date of Patent: September 4, 2007Assignee: Lazare Kaplan International, Inc.Inventors: George R. Kaplan, Avigdor Shachrai, Oded Anner, Leonid Gurvich
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Patent number: 7010938Abstract: A microinscribed gemstone such as a diamond is inscribed by a laser beam to graphitize a surface portion of the gemstone without damaging a bulk portion.Type: GrantFiled: August 12, 2004Date of Patent: March 14, 2006Assignee: Lazare Kaplan International, Inc.Inventors: George R. Kaplan, Avigdor Shachrai, Oded Anner, Leonid Gurvich
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Publication number: 20040146451Abstract: The present invention is directed to a method for changing the color of colored natural diamonds. The method includes placing a discolored natural diamond in a pressure-transmitting medium which is consolidated into a pill. Next, the pill is placed into a high pressure/high temperature (HP/HT) press at elevated pressure and elevated temperature for a time sufficient to improve the color of the diamond. The diamond may be exposed at elevated-pressure and elevated-temperature conditions within the graphite-stable region of the carbon-phase diagram—without significant graphitization of the diamond, or above the diamond-graphite equilibrium and within the diamond-stable region of the carbon-phase diagram. Finally, the diamond is recovered from said press. Colorless Type Ia and Type II diamonds may be made by this method.Type: ApplicationFiled: December 15, 2003Publication date: July 29, 2004Applicants: General Electric Co., Lazare Kaplan International, Inc.Inventors: Suresh Shankarappa Vagarali, Steven William Webb, William Edwin Jackson, William Frank Banholzer, Thomas Richard Anthony, George Rene Kaplan
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Patent number: 6684663Abstract: A microinscribed gemstone is inscribed by a laser beam to graphitize a surface portion of the gemstone without damaging a bulk portion.Type: GrantFiled: September 6, 2002Date of Patent: February 3, 2004Assignee: Lazare Kaplan International, Inc.Inventors: George R. Kaplan, Avigdor Shachrai, Oded Anner, Leonid Gurvich
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Patent number: 6476351Abstract: A laser energy microinscribing system, including a semiconductor excited Q-switched solid state laser energy source; a cut gemstone mounting system, allowing optical access to a mounted workpiece; an optical system for focusing laser energy from the laser energy source onto a cut gemstone; a displaceable stage for moving the gemstone mounting system with respect to the optical system so that the focused laser energy is presented to desired positions on the gemstone, having a control input; an imaging system for viewing the gemstone from a plurality of vantage points; and a rigid frame supporting the laser, the optical system and the stage in fixed relation, to resist differential movements of the laser, the optical system and the stage and increase immunity to vibrational misalignments.Type: GrantFiled: October 16, 2000Date of Patent: November 5, 2002Assignee: Lazare Kaplan International, Inc.Inventors: George R. Kaplan, Avigdor Shachrai, Oded Anner, Leonid Gurvich
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Patent number: 6211484Abstract: A laser energy microinscribing system, comprising a semiconductor excited Q-switched solid state laser energy source; a cut gemstone mounting system, allowing optical access to a mounted workpiece; an optical system for focusing laser energy from the laser energy source onto a cut gemstone; a displaceable stage for moving said gemstone mounting system with respect to said optical system so that said focused laser energy is presented to desired positions on said gemstone, having a control input; an imaging system for viewing the gemstone from a plurality of vantage points; and a rigid frame supporting said laser, said optical system and said stage in fixed relation, to resist differential movements of said laser, said optical system and said stage and increase immunity to vibrational misalignments. The laser energy source is preferably a semiconductor diode excited Q-switched Nd:YLF laser with a harmonic converter having an output of about 530 nm.Type: GrantFiled: May 11, 1999Date of Patent: April 3, 2001Assignee: Lazare Kaplan International, Inc.Inventors: George R. Kaplan, Avigdor Shachrai, Oded Anner, Leonid Gurvich
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Patent number: 5932119Abstract: A laser energy microinscribing system, including a semiconductor excited Q-switched solid state laser energy source; a cut gemstone mounting system, allowing optical access to a mounted workpiece; an optical system for focusing laser energy from the laser energy source onto a cut gemstone; a displaceable stage for moving said gemstone mounting system with respect to said optical system so that the focused laser energy is presented to desired positions on the gemstone, having a control input; an imaging system for viewing the gemstone from a plurality of vantage points; and a rigid frame supporting the laser, the optical system and the stage in fixed relation, to resist differential movements of the laser, the optical system and the stage and increase immunity to vibrational misalignments. The laser energy source is preferably a semiconductor diode excited Q-switched Nd:YLF laser with a harmonic converter having an output of about 530 nm.Type: GrantFiled: July 30, 1996Date of Patent: August 3, 1999Assignee: Lazare Kaplan International, Inc.Inventors: George R. Kaplan, Avigdor Shachrai, Oded Anner, Leonid Gurvich
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Patent number: D330873Type: GrantFiled: December 20, 1990Date of Patent: November 10, 1992Assignee: Lazare Kaplan International Inc.Inventor: George R. Kaplan