Curtis A Johnson

Address:

3998 Ponder Dr, Cincinnati, OH 45245

VIN:

3N1BC13E17L384660

Make:

NISSAN

Model:

VERSA

Year:

2007

Address:

308 Dixie Dr, Towson, MD 21204

Phone:

4108254453

VIN:

5FNRL38757B425405

Make:

HONDA

Model:

ODYSSEY

Year:

2007

US Patent:

6982126, Jan 3, 2006

Filed:

Nov 26, 2003

Appl. No.:

10/707197

Inventors:

Ramgopal Darolia - West Chester OH, US
Irene Spitsberg - Loveland OH, US
Brett Allen Rohrer Boutwell - Liberty Township OH, US
Mark Daniel Gorman - West Chester OH, US
Curtis Alan Johnson - Niskayuna NY, US
Venkat Subramaniam Venkataramani - Clifton Park NY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

B32B 9/00
F03B 3/12

US Classification:

428701, 428697, 428699, 428702, 428632, 428633, 428141, 428148, 416241 B

Abstract:

A thermal barrier coating (TBC) for a component intended for use in a hostile thermal environment. The TBC has an interior region and an outer surface region on and contacting the interior region. Both regions are formed of a ceramic material, with the interior region having a lower thermal conductivity than zirconia partially stabilized by about seven weight percent yttria. The interior region constitutes more than half of the thickness of the TBC, and the outer surface region constitutes less than half of the thickness of the TBC. The TBC has a columnar microstructure whereby the interior region and the outer surface region comprise columns of their ceramic materials. The outer surface region is more erosion and impact resistant than the interior region at least in part as a result of the columns thereof being more closely spaced than the columns of the interior region.

US Patent:

6998172, Feb 14, 2006

Filed:

Aug 16, 2002

Appl. No.:

10/064791

Inventors:

Boris A. Movchan - Kyiv, UA
Yuriy E. Rudoy - Kyiv, UA
Leonella M. Nerodenko - Kyiv, UA
Ramgopal Darolia - West Chester OH, US
Irene Spitsberg - Loveland OH, US
Anthony Mark Thompson - Niskayuna NY, US
Curtis Alan Johnson - Niskayuna NY, US
David John Wortman - Niskayuna NY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

B32B 3/26

US Classification:

4283055, 4283073, 4283077, 4283144, 4283191, 428689, 428697, 428698, 428699

Abstract:

A thermal barrier coating (TBC ) and method for forming the TBC () on a component () characterized by a stabilized microstructure that resists grain growth, sintering and pore coarsening or coalescence during high temperature excursions. The TBC () contains elemental carbon and/or a carbon-containing gas that increase the amount of porosity () initially within the TBC () and form additional fine closed porosity () within the TBC () during subsequent exposures to high temperatures. A first method involves incorporating elemental carbon precipitates by evaporation into the TBC microstructure. A second method is to directly incorporate an insoluble gas, such as a carbon-containing gas, into an as-deposited TBC () and then partially sinter the TBC () to entrap the gas and produce fine stable porosity within the TBC ().

US Patent:

7037381, May 2, 2006

Filed:

Jun 17, 2005

Appl. No.:

11/155812

Inventors:

Howard J. Farr - Blue Ash OH, US
Keith H. Betscher - West Chester OH, US
D. Sangeeta - Cincinnati OH, US
Himanshu B. Vakil - Niskayuna NY, US
Curtis A. Johnson - Niskayuna NY, US
Edward B. Stokes - Charlotte NC, US
Heinz Jaster - Schenectady NY, US
Alexander S. Allen - Houston TX, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

B08B 3/10

US Classification:

134 10, 134 2, 134 19, 134 29, 134 36, 134 38

Abstract:

Method for stripping ceramic coatings from the surfaces of articles. The apparatus includes a dedicated pressure vessel, such as an autoclave, which is maintained at an elevated temperature. Caustic solution is preheated to a first elevated temperature before injecting it into the autoclave, and the caustic solution is filtered and cooled after use in the autoclave. The articles are stripped of coating by maintaining the articles at an elevated temperature and pressure for a predetermined time. Various options include the use of analytical equipment to maintain the chemistry of the caustic solution and use of a volatile organic solution to prepressurize the autoclave and shorten cycle time. The articles are transferred to a separate pressure vessel after completion of the stripping operation so that the autoclave used for stripping can be maintained at an elevated temperature, thereby shortening the cycle time for stripping of additional articles.

US Patent:

7364807, Apr 29, 2008

Filed:

Dec 6, 2004

Appl. No.:

11/006292

Inventors:

Brett Allen Rohrer Boutwell - Liberty Township OH, US
Irene Spitsberg - Loveland OH, US
Christine Govern - Cincinnati OH, US
Bangalore A. Nagaraj - West Chester OH, US
Brian Thomas Hazel - West Chester OH, US
Ramgopal Darolia - West Chester OH, US
Curtis Alan Johnson - Niskayuna NY, US
Yan Gao - Niskayuna NY, US
Mark Daniel Gorman - West Chester OH, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

B32B 15/04
B32B 18/00

US Classification:

428701, 416241 R, 416241 B

Abstract:

In accordance with an embodiment of the invention, an article is provided. The article comprises a substrate comprised of silicon containing material, an environmental barrier coating (EBC) overlying the substrate and a thermal barrier coating (TBC) on the environmental barrier coating. The thermal barrier coating comprising a compound having a rhombohedral phase.

US Patent:

7476453, Jan 13, 2009

Filed:

Dec 6, 2004

Appl. No.:

11/006367

Inventors:

Brett Allen Rohrer Boutwell - Liberty Township OH, US
Ramgopal Darolia - West Chester OH, US
Curtis Alan Johnson - Niskayuna NY, US
Irene Spitsberg - Loveland OH, US
Mark Daniel Gorman - West Chester OH, US
Yan Gao - Niskayuna NY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

B32B 18/00
B32B 15/04

US Classification:

428702, 428701, 428469, 416241 B, 416241 R

Abstract:

In accordance with an embodiment of the invention, a thermal barrier coating for inclusion in a thermal barrier coating system is provided. The thermal barrier coating comprises a compound having a rhombohedral phase. In accordance with another embodiment of the invention, a thermal barrier coating is provided that comprises a compound having the formula of: ABO, wherein A is at least one rare earth element; and B is selected from the group consisting of Zr, Hf and mixtures thereof.

US Patent:

7537806, May 26, 2009

Filed:

Sep 5, 2007

Appl. No.:

11/899331

Inventors:

Brett Allen Rohrer Boutwell - Liberty Township OH, US
Ramgopal Darolia - West Chester OH, US
Curtis Alan Johnson - Niskayuna NY, US
Irene Spitsberg - Loveland OH, US
Mark Daniel Gorman - West Chester OH, US
Yan Gao - Niskayuna NY, US

Assignee:

General Electric Company - Schnectady NY

International Classification:

B32B 18/00
B32B 15/04

US Classification:

427453, 416241 B, 416241 R, 427566, 427454, 427446

Abstract:

In accordance with an embodiment of the invention, a thermal barrier coating for inclusion in a thermal barrier coating system is provided. The thermal barrier coating comprises a compound having a rhombohedral phase. In accordance with another embodiment of the invention, a thermal barrier coating is provided that comprises a compound having the formula of: ABO, wherein A is at least one rare earth element; and B is selected from the group consisting of Zr, Hf and mixtures thereof.

US Patent:

7544394, Jun 9, 2009

Filed:

Sep 5, 2007

Appl. No.:

11/899336

Inventors:

Brett Allen Rohrer Boutwell - Liberty Township OH, US
Irene Spitsberg - Loveland OH, US
Christine Govern - Cincinnati OH, US
Bangalore A. Nagaraj - West Chester OH, US
Brian Thomas Hazel - West Chester OH, US
Ramgopal Darolia - West Chester OH, US
Curtis Alan Johnson - Niskayuna NY, US
Yan Gao - Niskayuna NY, US
Mark Daniel Gorman - West Chester OH, US

Assignee:

General Electric Company - Schnectady NY

International Classification:

B32B 15/04
B32B 9/00

US Classification:

427453, 427454, 427446, 427566, 416241 B, 416241 R

Abstract:

In accordance with an embodiment of the invention, an article is provided. The article comprises a substrate comprised of silicon containing material, an environmental barrier coating (EBC) overlying the substrate and a thermal barrier coating (TBC) on the environmental barrier coating. The thermal barrier coating comprising a compound having a rhombohedral phase.

US Patent:

7597966, Oct 6, 2009

Filed:

Jun 10, 2005

Appl. No.:

11/160164

Inventors:

Irene Spitsberg - Loveland OH, US
Brett Allen Rohrer Boutwell - Liberty Township OH, US
Robert William Bruce - Loveland OH, US
Curtis Alan Johnson - Niskayuna NY, US
Bangalore Aswatha Nagaraj - West Chester OH, US
William Scott Walston - Cincinnati OH, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

B32B 9/00

US Classification:

428469, 428472, 428701, 428702, 416241 B, 416241 R

Abstract:

A thermal barrier coating and deposition process for a component intended for use in a hostile thermal environment, such as the turbine, combustor and augmentor components of a gas turbine engine. The TBC has a first coating portion on at least a first surface portion of the component. The first coating portion is formed of a ceramic material to have at least an inner region, at least an outer region overlying the inner region, and a columnar microstructure whereby the inner and outer regions comprise columns of the ceramic material. The columns of the inner region are more closely spaced than the columns of the outer region so that the inner region of the first coating portion is denser than the outer region of the first coating portion, wherein the higher density of the inner region promotes the impact resistance of the first coating portion.