Anatoli A Abramov, 6427 Timber Ln, Painted Post, NY 14870

7982162, Jul 19, 2011

May 15, 2007

11/803428

Anatoli Anatolyevich Abramov - Painted Post NY, US
Yawei Sun - Horseheads NY, US

Corning Incorporated - Corning NY

B23K 26/00

21912172, 225 2

A method and an apparatus for both scoring and separating a brittle material, and in particular a glass sheet or substrate, using only a single laser beam. A radiation zone created by the beam incident on the glass substrate, and the radiation zone is effectively formed into two portions by a coolant jet incident on the radiation zone. The radiation zone is separated into a leading portion, which generates a vent crack partially through a thickness of the substrate, and a trailing portion that propagates the vent crack through the remainder of the substrate, thereby separating the substrate.

8011207, Sep 6, 2011

Jan 15, 2008

12/008949

Anatoli A. Abramov - Painted Post NY, US
Yawei Sun - Horseheads NY, US
Wei Xu - Painted Post NY, US
Naiyue Zhou - Painted Post NY, US

Corning Incorporated - Corning NY

C03B 33/00
C03B 33/02
C03B 33/037

65112, 65 2918

Experimental data is presented which shows that laser scoring of glass sheets () with existing techniques produces unacceptable levels of residual stress in the separated sheets as the scoring speed is increased. Methods for solving this problem are disclosed which employ elongated and, preferably, asymmetrically-truncated laser beams (). The methods allow glass sheets () to be scored at speeds of 1000 mm/s and above with low levels of residual stress, e. g. , levels of residual stress which are less than or equal to 500 psi. Such low levels of residual stress translate into low levels of distortion during the manufacture of display panels (e. g. , LCD panels) as well as in improved properties of the separated edges. The methods can be used with glasses of various types including glasses having low coefficients of thermal expansion.

8035901, Oct 11, 2011

Nov 26, 2008

12/324541

Anatoli Anatolyevich Abramov - Painted Post NY, US
Yawei Sun - Horseheads NY, US
Qi Wu - Painted Post NY, US

Corning Incorporated - Corning NY

G02B 13/18
G02B 3/02
B23K 26/00

359719, 359709, 21912169

Disclosed are systems and methods for scoring and separating a glass sheet along a curved trajectory using a laser and optics. The system includes a laser that generates a laser beam, a focusing lens, and a conical optical component, such as a conical lens or a reflective conical mirror. The laser directs the laser beam through the focusing lens and conical lens to create a curved score line that is projected onto a glass sheet to create a curved score line, along which the glass sheet can be separated. Optionally, the laser directs the laser beam through the focusing lens towards a conical mirror, off of which the laser beam is reflected toward the glass sheet to create a curved score line.

8051679, Nov 8, 2011

Sep 29, 2008

12/240356

Anatoli Anatolyevich Abramov - Painted Post NY, US
Marvin William Kemmerer - Montour Falls NY, US
Yawei Sun - Horseheads NY, US
Naiyue Zhou - Painted Post NY, US

Corning Incorporated - Corning NY

C03B 33/00
C03B 33/02
C03B 33/037

65112, 65 2918, 21912169

Methods of using a laser to separate a glass sheet is presented that employs an elongated and, preferably, asymmetrically-truncated laser beam. The methods allow glass sheets suitable for use in modern display applications to be separated at speeds up to about 200 mm/s with low levels of residual stress, e. g. , levels of residual stress which are less than or equal to 100 psi, and preferably less than 50 psi. Glasses with high coefficients of thermal expansion (e. g. greater than about 35×10/ C. ) may be separated at faster speeds. Such low levels of residual stress translate into low levels of distortion during the manufacture of display panels (e. g. , LCD panels) as well as in improved properties (geometry, strength, defect-free etc. ) of the separated edges. The methods can be used with glasses of various types including glasses having high coefficients of thermal expansion and also with glass sheets of different thickness.

8053704, Nov 8, 2011

Jul 30, 2008

12/220948

Anatoli Anatolyevich Abramov - Painted Post NY, US
Ljerka Ukrainczyk - Painted Post NY, US
Qi Wu - Painted Post NY, US
Naiyue Zhou - Painted Post NY, US

Corning Incorporated - Corning NY

B23K 26/06
B23K 26/36

21912168, 21912175, 225 2, 225 96, 65105, 65271

Disclosed are systems for scoring non-flat materials including non-flat glass sheets (). In one embodiment, a laser scoring system is described. The laser scoring system includes a laser () and an optical head (). The optical head () is configured to receive output from the laser () and focus the output into an elongated laser beam having a beam waist and an extended focal depth of greater than +/−5 mm relative to the center of the beam waist with a power density sufficient for scoring a material having at least a portion within the extended focal depth. In one aspect the system can include a beam expander (). The beam expander () receives the output from the laser (), expands the output from the laser to an expanded laser beam, and transmits the expanded laser beam to the optical head ().

8171753, May 8, 2012

Nov 18, 2009

12/621068

Anatoli A. Abramov - Painted Post NY, US
Weiwei Luo - Painted Post NY, US

Corning Incorporated - Corning NY

C03B 33/09

65176, 65105, 65174, 65 97, 21912172

A method of scoring and/or separating a brittle material is described comprising heating a surface of the brittle material along a predetermined path with a laser, then quenching the heated surface with a stream of cooling liquid, such as water, formed by a nozzle. The portion of the cooling stream impinging on the surface of the brittle material is a substantially columnar flow.

8245540, Aug 21, 2012

Feb 24, 2009

12/391565

Anatoli Anatolyevich Abramov - Painted Post NY, US
Marvin William Kemmerer - Montour Falls NY, US
Naiyue Zhou - Painted Post NY, US

Corning Incorporated - Corning NY

C03B 33/09
C03B 33/00

65105, 65112, 21912167, 21912172, 83879, 83880

A method of cutting glass that prevents uncontrolled crack propagation when high background stress is present, either in the form of thermal residual stress, external mechanical stress or a combination thereof. The method includes masking an edge of the glass by blocking the beam using highly reflective or absorptive material located near the glass surface, or deposited on the surface in a form of a thin film (or highly reflective paint) to prevent uncontrolled crack initiation and propagation starting from the glass edge. The initiation of the laser scoring is located at a predetermined distance from the glass edge. Yet another aspect of the invention embodies stopping propagation of the vent at the exiting end of the score line.

8258427, Sep 4, 2012

Dec 12, 2008

12/334121

Anatoli Anatolyevich Abramov - Painted Post NY, US
Yawei Sun - Horseheads NY, US

Corning Incorporated - Corning NY

B23K 26/00

21912169, 21912172, 21912167

Disclosed are systems and methods for separating a glass sheet along a predetermined line. Laser beams are generated and shaped into elongated laser beams. Arm members are provided that are pivotally coupled together to form a chain of arm members. Each elongated laser beam is directed therefrom a respective laser beam toward the glass sheet to form a contiguous chain of elongated laser beams thereon a surface of the glass sheet. The arm members can be moved to move the contiguous chain of elongated laser beams along the predetermined line to scoring the glass sheet along the predetermined line.