Kathryn E Longley

US Patent:

6515098, Feb 4, 2003

Filed:

Jul 2, 2001

Appl. No.:

09/895125

Inventors:

Ramesh Hariharan - Malden MA
Kathryn Lynn Longley - Saratoga Springs NY
Gary Charles Davis - Albany NY
Grant Hay - Schenectady NY

Assignee:

General Electric Company - Niskayuna NY

International Classification:

C08G 6400

US Classification:

528196, 528198, 2641761, 264330, 347101, 347150, 347306, 428 641, 428 647, 430200, 430264, 43027011, 503201

Abstract:

The damping performance of an article and a polycarbonate composition is improved and a storage medium for data is provided with a glass transition temperature greater than about 150Â C.

US Patent:

6706847, Mar 16, 2004

Filed:

Mar 22, 2002

Appl. No.:

10/104629

Inventors:

Gary Charles Davis - Albany NY
Rein Mollerus Faber - Begen op Zoom, NL
Jan-Pleun Lens - Breda, NL
Kathryn Lynn Longley - Saratoga Springs NY
Marc Brian Wisnudel - Clifton Park NY

Assignee:

General Electric Company - Schenectady NY

International Classification:

C08G 6400

US Classification:

528196, 362273, 369283, 369288, 428 641, 428 644, 428 646, 428 647, 428913, 4302701, 4304951, 430945, 525461, 525462, 528198

Abstract:

A thermoplastic composition is described, based on a copolycarbonate which includes at least two structural units. Structure I is usually a conventional carbonate based on bisphenol A, while structure II is a bisphenol carbonate which includes branched or linear groups extending from a bridging carbon atom or carbon group which connects two aromatic rings. The compositions exhibit very good melt flow, along with enhanced shear-thinning behavior. These characteristics are important for optical disc applications. Thus, related articles are described, along with processes for preparing such articles.

US Patent:

6870025, Mar 22, 2005

Filed:

Dec 23, 2002

Appl. No.:

10/326933

Inventors:

Patrick Joseph McCloskey - Watervliet NY, US
Jan Pleun Lens - Breda, NL
James Anthony Cella - Clifton Park NY, US
Jan Henk Kamps - Bergen op Zoom, NL
Kathryn Lynn Longley - Saratoga Springs NY, US
Narayan Ramesh - Niskayuna NY, US
Warren William Reilly - Northville NY, US
Marc Brian Wisnudel - Clifton Park NY, US

Assignee:

General Electric Company - Niskayuna NY

International Classification:

C08G064/00

US Classification:

528196, 528198, 264219, 502164

Abstract:

Polycarbonates containing low or undetectable levels of Fries rearrangement products and comprising repeat units derived from one or more of resorcinol, hydroquinone, methylhydroquinone, bisphenol A, and 4,4′-biphenol have been prepared by the melt reaction of one or more of the aforementioned dihydroxy aromatic compounds with an ester-substituted diaryl carbonate such as bis-methyl salicyl carbonate. Low, or in many instances undetectable, levels of Fries rearrangement products are found in the product polycarbonates obtained as the combined result of a highly effective catalyst system which suppresses the Fries reaction and the use of lower melt polymerization temperatures relative to temperatures required for the analogous polymerization reactions using diphenyl carbonate.

US Patent:

6900283, May 31, 2005

Filed:

Nov 4, 2002

Appl. No.:

10/286165

Inventors:

Narayan Ramesh - Niskayuna NY, US
Patrick Joseph McCloskey - Watervliet NY, US
Kathryn Lynn Longley - Saratoga Springs NY, US

Assignee:

General Electric Company - Niskayuna NY

International Classification:

C08G064/00

US Classification:

528196, 502164, 528198

Abstract:

Stable, homogeneous melt solutions are prepared at temperatures of 200 C. or less from solid mixtures comprising at least one diaryl carbonate, at least one high melting dihydroxy aromatic compound (mp>200 C. ), a transesterification catalyst, and optionally a lower melting dihydroxy aromatic compound. Thus, a stable, homogeneous melt solution is obtained from a solid mixture comprising 4,4′-biphenol (mp 282-284 C. ) at a temperature of about 200 C. using either diphenyl carbonate or bis(methyl salicyl) carbonate as the diaryl carbonate component. It is shown that formation of the stable, homogeneous melt solutions requires the presence of the transesterification catalyst when substantial amounts of the high melting dihydroxy aromatic compound are present in the initial solid mixture. Solid mixtures comprising a variety of high melting bisphenols; 4,4′-biphenol; 3,3,3,3′-tetramethylspirobiindanbisphenol, and 4,4′-sulfonyidiphenol are converted to stable, homogeneous melt solutions at 200 C. , a temperature substantially below the melting points of the high melting bisphenols in their pure states.

US Patent:

6925051, Aug 2, 2005

Filed:

Aug 1, 2003

Appl. No.:

10/633473

Inventors:

Marc Brian Wisnudel - Clifton Park NY, US
Kathryn Lynn Longley - Saratoga Springs NY, US
Daniel Robert Olson - Voorheesville NY, US
Jan Pleun Lens - Breda, NL
Edward Paul Lindholm - Brookline MA, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G11B007/26

US Classification:

369286, 43027011, 428 648, 428 644

Abstract:

The present invention provides a reactive adhesive formulation for use in a limited play data storage medium, the reactive adhesive formulation including at least one adhesive material, at least one reactive material disposed within the at least one adhesive material and at least one photo-bleaching retarder material disposed within the at least one adhesive material. The at least one photo-bleaching retarder material includes resorcinol, 4-hexylresorcinol and/or polyhydroxystyrene.

US Patent:

7102802, Sep 5, 2006

Filed:

Feb 22, 2006

Appl. No.:

11/359958

Inventors:

Christoph Georg Erben - Clifton Park NY, US
Eugene Pauling Boden - Scotia NY, US
Xiaolei Shi - Niskayuna NY, US
Kathryn Lynn Longley - Saratoga Springs NY, US

Assignee:

General Electric Company - Niskayuna NY

International Classification:

G03B 31/00
G11B 5/633

US Classification:

359 3, 359 4, 430 1

Abstract:

The present invention provides a method for storing holographic data comprising providing an optically transparent substrate comprising a photochemically active dye; irradiating the optically transparent substrate with a holographic interference pattern, wherein the pattern has a first wavelength and an intensity both sufficient to convert, within a volume element of the substrate, at least some of the photochemically active dye into a photo-product, producing within the irradiated volume element concentration variations of the photo-product corresponding to the holographic interference pattern, thereby producing a first optically readable datum corresponding to the volume element; activating the optically transparent substrate to form an intramolecular hydrogen bond to a nitrone oxygen in residual photochemically active dye, to stabilize the optically readable datum.

US Patent:

7115700, Oct 3, 2006

Filed:

May 19, 2005

Appl. No.:

11/133827

Inventors:

James Anthony Cella - Clifton Park NY, US
Jan Henk Kamps - Bergen op Zoom, NL
Jan Pleun Lens - Breda, NL
Kathryn Lynn Longley - Saratoga Springs NY, US
Patrick Joseph McCloskey - Watervliet NY, US
Narayan Ramesh - Niskayuna NY, US
Warren William Reilly - Northville NY, US
Marc Brian Wisnudel - Clifton Park NY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

C08G 63/00

US Classification:

528190, 2641761, 264219, 528196, 528198

Abstract:

Polycarbonates containing low or undetectable levels of Fries rearrangement products and comprising repeat units derived from one or more of resorcinol, hydroquinone, methylhydroquinone, bisphenol A, and 4,4′-biphenol have been prepared by the melt reaction of one or more of the aforementioned dihydroxy aromatic compounds with an ester-substituted diaryl carbonate such as bis-methyl salicyl carbonate. Low, or in many instances undetectable, levels of Fries rearrangement products are found in the product polycarbonates obtained as the combined result of a highly effective catalyst system which suppresses the Fries reaction and the use of lower melt polymerization temperatures relative to temperatures required for the analogous polymerization reactions using diphenyl carbonate.

US Patent:

7226719, Jun 5, 2007

Filed:

Sep 8, 2003

Appl. No.:

10/657632

Inventors:

Marc Brian Wisnudel - Clifton Park NY, US
Daniel Robert Olson - Voorheesville NY, US
David Andrew Simon - Johnstown NY, US
Kathryn Lynn Longley - Saratoga Springs NY, US
Edward Paul Lindholm - Brookline MA, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G11B 7/24
G02B 5/23
C08K 5/053

US Classification:

43027011, 430945, 720719, 428 648, 252586, 523168, 523125, 369288

Abstract:

The present invention provides a formulation for a reactive dye layer for a limited-play optical storage medium, the reactive formulation including at least one carrier material or curable acrylate monomer, at least one reactive material disposed within the carrier material or acrylate monomer, and at least one photo-bleaching retarder material disposed within the at least one adhesive material. The at least one photo-bleaching retarder material includes at least one polymeric polyhydroxy compound selected from the group consisting of polyhydroxystyrenes, cellulose, and functionalized cellulose derivatives.