David J Kerko

US Patent:

6363748, Apr 2, 2002

Filed:

Nov 16, 2000

Appl. No.:

09/714083

Inventors:

Thomas G. Havens - Painted Post NY
David J. Kerko - Corning NY
Brent M. Wedding - Corning NY

Assignee:

Corning SA - Avon Cedex

International Classification:

C03C 1900

US Classification:

65 3011, 65 301, 65 321, 65 61

Abstract:

An ophthalmic, protective, filter lens, and a method of producing such lens, the lens having a ratio of Z and Y tristimulus values between 0. 25-0. 40, a dominant wavelength between 570-580 nm. on a color mixture diagram, a sharp transmission drop between 450-500 nm. and a transmission not over 30% between 400-450 nm. The lens is produced by firing a silver halide-containing, photochromic glass lens in a hydrogen-containing atmosphere within a temperature range of 465Â C. to 495Â C. for less than 20 minutes.

US Patent:

6606885, Aug 19, 2003

Filed:

Oct 9, 2001

Appl. No.:

09/974534

Inventors:

Michael D. Harris - Horseheads NY
Thomas G. Havens - Painted Post NY
William E. Horsfall - Corning NY
David J. Kerko - Corning NY

Assignee:

Corning Incorporated - Corning NY

International Classification:

C03C 400

US Classification:

65 3011, 65 323, 65 325, 501 13, 359490, 359492

Abstract:

A glass polarizer and a method of making the polarizer, the polarizer being produced from an R OâAl O âB O âSiO glass containing limited amounts of ZrO and TiO , and having a silver halide liquidus temperature and a rutile liquidus temperature, both temperatures being not over 995Â C.

US Patent:

6811727, Nov 2, 2004

Filed:

Jan 9, 2002

Appl. No.:

10/044595

Inventors:

Thomas G. Havens - Corning NY
David J. Kerko - Sunset SC
Brent M. Wedding - Corning NY

Assignee:

Corning Incorporated - Corning NY

International Classification:

G02B 523

US Classification:

252586, 351163

Abstract:

Disclosed is a photochromic plastic ophthalmic lenses having polymer matrices with an effective amount of at least one photochromic agent distributed therein, applied thereto or associated therewith and at least one ophthalmic filtering dye applied thereto, associated therewith or distributed therein the lens. A group of the filter lenses have dominant wavelengthes between 570 and 605 nm and color purity between 50% and 75%. Another lens product of the present invention is particularly suitable for patients suffering from retinitis pigmentosa. The lenses of the present invention are particularly suitable for individuals bothered by strong or variable illumination intensity.

US Patent:

6197711, Mar 6, 2001

Filed:

Apr 26, 1999

Appl. No.:

9/299445

Inventors:

Thomas G. Havens - Painted Post NY
David J. Kerko - Corning NY
Brent M. Wedding - Corning NY

Assignee:

Corning S.A. - Avon Cedex

International Classification:

C03C 406

US Classification:

501 13

Abstract:

An ophthalmic, protective, filter lens, and a method of producing such lens, the lens having a ratio of Z and Y tristimulus values between 0. 25-0. 40, a dominant wavelength between 570-580 nm. on a color mixture diagram, a sharp transmission drop between 450-500 nm. and a transmission not over 30% between 400-450 nm.

US Patent:

57293813, Mar 17, 1998

Filed:

Nov 13, 1995

Appl. No.:

8/555652

Inventors:

Thomas G. Havens - Painted Post NY
David J. Kerko - Corning NY
JoAnn Morrell - Horseheads NY

Assignee:

Corning Incorporated - Corning NY

International Classification:

G02B 108

US Classification:

359361

Abstract:

This invention is directed to the production of cuprous halide- or a cuprous-cadmium halide-containing glass articles which are essentially completely opaque to ultraviolet radiation and can be essentially completely opaque to radiation within the region of wavelengths of up to 550 nm, but are transparent to visible radiations having a wavelength longer than the radiation within the region of opacity. The method involves exposing the glass articles to a hydrogen gas-containing atmosphere at a temperature between about 375. degree. -500. degree. C. for a period of at least 18 hours to develop an integral reduced layer in at least one surface of the article having a depth effective to prevent the transmission of ultraviolet radiation and radiation having a wavelength up to 550 nm through the article.

US Patent:

61773719, Jan 23, 2001

Filed:

Apr 9, 1999

Appl. No.:

9/289520

Inventors:

Thomas G. Havens - Painted Post NY
David J. Kerko - Corning NY
Brent M. Wedding - Corning NY

Assignee:

Corning S.A. - Avon Cedex

International Classification:

C03C 406

US Classification:

501 13

Abstract:

A fixed tint, photochromic glasses and sunglass lenses produced therefrom. The glasses have R. sub. 2 O--Al. sub. 2 O. sub. 3 --B. sub. 2 O. sub. 3 --SiO. sub. 2 base compositions, contain silver chloride and bromide contents as photochromic constituents and 0. 27-0. 38% and 0. 035-0. 060%, both by weight percent, as glass colorants, the NiO:Co. sub. 3 O. sub. 4 ratio being at least 6:1.

US Patent:

41683390, Sep 18, 1979

Filed:

Jul 26, 1978

Appl. No.:

5/927956

Inventors:

David J. Kerko - Corning NY
Jean-Pierre Odile - Corning NY
Candace J. Quinn - Corning NY
Paul A. Tick - Corning NY

Assignee:

Corning Glass Works - Corning NY

International Classification:

B32B 702
B32B 2736
G02B 300

US Classification:

428220

Abstract:

This invention is directed to the production of photochromic glass microsheet which is particularly useful in the fabrication of transparent glass-plastic composite lenses. In such lenses, the photochromic microsheet will either be buried within the plastic or will act as a surface layer thereon. The microsheet consists essentially, in weight percent on the oxide basis as calculated from the batch, of 54-66% SiO. sub. 2, 7-15% Al. sub. 2 O. sub. 3, 10-30% B. sub. 2 O. sub. 3, 3-15% Na. sub. 2 O, 0. 4-1. 5% PbO, 0. 2-0. 5% Br, 0. 5-1. 2% Cl, 0. 2-0. 5% F, 0. 008-0. 03% CuO, and >0. 03%-1% Ag.

US Patent:

61659223, Dec 26, 2000

Filed:

Sep 8, 1999

Appl. No.:

9/391744

Inventors:

Thomas G. Havens - Painted Post NY
David J. Kerko - Corning NY
Brent M. Wedding - Corning NY

Assignee:

Corning S.A. - Avon Cedex

International Classification:

C03C 406

US Classification:

501 13

Abstract:

A fixed tint, photochromic glasses and sunglass lenses produced therefrom. The glasses have R. sub. 2 O--Al. sub. 2 O. sub. 3 --B. sub. 2 O. sub. 3 --SiO. sub. 2 base compositions, contain silver chloride and bromide contents as photochromic constituents and 0. 22-0. 38% NiO and 0. 034-0. 060% CoO, both by weight percent, as glass colorants, the NiO:CoO ratio being in the range of 5. 5-7. 2:1.