Robert J Comstock, 7335 Weller Dr, North Huntingdon, PA 15642

8359732, Jan 29, 2013

Jan 15, 2008

12/007766

Lars Hallstadius - Västerås, SE
Mats Dahlbäck - Västerås, SE
John Bates - West Clearfield UT, US
James Dougherty - Riverdale UT, US
Steven J. King - Blythewood SC, US
Robert J. Comstock - Irwin PA, US

Westinghouse Electric Sweden AB - Vasteras

B23P 19/00

29723, 2989003, 29890039, 2989004, 29412, 29415, 148421, 148668, 148672, 376260

A method of manufacturing an optimized sheet metal () of a zirconium based alloy is described, which optimized sheet metal () defines a sheet plane (BA). The method comprises the steps of providing a sheet metal () of a zirconium based. alloy, subjecting the sheet metal () to at least a preparing cold rolling and a final cold rolling, wherein the preparing cold rolling and the final cold rolling are both performed in a common rolling direction, and heat treating the sheet metal () between the preparing cold rolling and the final cold rolling so that the zirconium based alloy is partially re-crystallized. A method of manufacturing a spacer grid using an optimized sheet metal () according to the invention is also described.

2006024, Nov 2, 2006

Mar 23, 2005

11/087844

David Colburn - Columbia SC, US
Robert Comstock - Irwin PA, US
Terrence Cook - Riverdale UT, US
Mats Dahlback - Vasteras, SE
John Foster - Bluffton SC, US
Anand Garde - Columbia SC, US
Pascal Jourdain - Vasteras, SE
Ronald Kesterson - Columbia SC, US
Michael McClarren - New Alexandria PA, US
Lynn Nuhfer - Pittsburgh PA, US
Jonna Partezana - Pittsburgh PA, US
Kenneth Yueh - Columbia SC, US
James Boshers - Marshville NC, US
Penney File - Lusby MD, US

C22F 1/18
C22C 16/00

148672000, 420423000

Articles, such as tubing or strips, which have excellent corrosion resistance to water or steam at elevated temperatures, are produced from alloys having 0.2 to 1.5 weight percent niobium, 0.01 to 0.45 weight percent iron, at least one additional alloy element selected from 0.02 to 0.8 weight percent tin, 0.05 to 0.5 weight percent chromium, 0.02 to 0.3 weight percent copper, 0.1 to 0.3 weight percent vanadium, 0.01 to 0.1 weight percent nickel, the balance at least 97 weight percent zirconium, including impurities, wherein the alloy may be fabricated from a process of forging the zirconium alloy into a material, beta quenching the material, forming the material by extruding or hot rolling the material, cold working the material with one or a multiplicity of cold working steps, wherein the cold working step includes cold reducing the material and annealing the material at an intermediate anneal temperature of 960-1105 F., and final working and annealing of the material. The articles formed also show improved weld corrosion resistance with the addition of chromium.

2010012, May 27, 2010

Feb 1, 2010

12/697322

David Colburn - Columbia SC, US
Robert Comstock - Irwin PA, US
Terrence Cook - Riverdale UT, US
Mats Dahlback - Vasteras, SE
John P. Foster - Bluffton SC, US
Anand Garde - Columbia SC, US
Pascal Jourdain - Vasteras, SE
Ronald Kesterson - Columbia SC, US
Micheal McClarren - New Alexandria PA, US
Lynn Nuhfer - Pittsburgh PA, US
Jonna Partezana - Finleyville PA, US
Kenneth Yueh - Columbia SC, US
James A. Boshers - Marshville NC, US
Penney File - Lusby MD, US

Westinghouse Electric Company LLC - Cranberry Township PA

G21C 3/07
C22C 16/00

376412, 420423, 420422, 148421

Articles, such as tubing or strips, which have excellent corrosion resistance to water or steam at elevated temperatures, are produced from alloys having 0.2 to 1.5 weight percent niobium, 0.01 to 0.45 weight percent iron, at least one additional alloy element selected from 0.02 to 0.8 weight percent tin, 0.05 to 0.5 weight percent chromium, 0.02 to 0.3 weight percent copper, 0.1 to 0.3 weight percent vanadium, 0.01 to 0.1 weight percent nickel, the balance at least 97 weight percent zirconium, including impurities, wherein the alloy may be fabricated from a process of forging the zirconium alloy into a material, beta quenching the material, forming the material by extruding or hot rolling the material, cold working the material with one or a multiplicity of cold working steps, wherein the cold working step includes cold reducing the material and annealing the material at an intermediate anneal temperature of 960-1105 F., and final working and annealing of the material. The articles formed also show improved weld corrosion resistance with the addition of chromium.

2011029, Dec 1, 2011

Jun 16, 2011

13/161563

JOHN P. FOSTER - Bluffton SC, US
David COLBURN - Ogden UT, US
Robert COMSTOCK - Irwin PA, US
Terrence COOK - Riverdale UT, US
Mats DAHLBACK - Vasteras, SE
Anand GARDE - Columbia SC, US
Pascal JOURDAIN - Vasteras, SE
Ronald KESTERSON - Columbia SC, US
Michael MCCLARREN - New Alexandria PA, US
Dianna Lynn SVEC NUHFER - Pittsburgh PA, US
Guirong PAN - Sumter SC, US
Jonna Partezana MUNDORFF - Finleyville PA, US
Hsiang Ken YUEH - Charlotte NC, US
James BOSHERS - Marshville NC, US
Penney FILE - Lusby MD, US
Bethany Boshers - , US

WESTINGHOUSE ELECTRIC COMPANY LLC - Cranberry Township PA

C22C 16/00

420423, 420422

Articles, such as tubing or strips, which have excellent corrosion resistance to water or steam at elevated temperatures, are produced from alloys having 0.2 to 1.5 weight percent niobium, 0.01 to 0.6 weight percent iron, and optionally additional alloy elements selected from the group consisting of tin, chromium, copper, vanadium, and nickel with the balance at least 97 weight percent zirconium, including impurities, where a necessary final heat treatment includes one of i) a SRA or PRXA (15-20% RXA) final heat treatment, or ii) a PRXA (80-95% RXA) or RXA final heat treatment.

2022018, Jun 16, 2022

Apr 23, 2020

17/594803

- Cranberry Township PA, US
William T. CLEARY - Irmo SC, US
Magnus LIMBACK - Västerås, SE
Andrew J. MUELLER - Blythewood SC, US
Robert J. COMSTOCK - Irwin PA, US

Westinghouse Electric Company LLC - Cranberry Township PA

B22F 10/64
B22F 10/28
B33Y 10/00
B33Y 40/20
B33Y 70/00
C22F 1/18

A process is described that includes forming a metal alloy component having a pre-specified three dimensional geometry for use in a nuclear reactor by an additive manufacturing process followed by annealing the formed component at a first annealing temperature within the alpha temperature range of the phase diagram for the metal alloy. A second annealing step at a second annealing temperature lower than the first annealing temperature may be added. Alternatively, annealing may be at an annealing temperature in the alpha+beta temperature range of a phase diagram for the metal alloy, followed by a second anneal in the alpha temperature range of the phase diagram for the metal alloy.

2015033, Nov 26, 2015

Jun 22, 2015

14/745792

- CRANBERRY TOWNSHIP PA, US
ROBERT J. COMSTOCK - IRWIN PA, US
ANDREW R. ATWOOD - COLUMBIA SC, US
GUIRONG PAN - ELGIN SC, US
ANAND GARDE - COLUMBIA SC, US
MATS DAHLBACK - VASTERAS, SE
JONNA PARTEZANA MUNDORFF - FINLEYVILLE PA, US
ANDREW J. MUELLER - ELIZABETH PA, US

WESTINGHOUSE ELECTRIC COMPANY, LLC. - CRANBERRY TOWNSHIP PA

C22F 1/18
C22F 1/00

Articles, such as tubing or strips, which have excellent corrosion resistance to water or steam at elevated temperatures, are produced from alloys having 0.2 to 1.5 weight percent niobium, 0.01 to 0.6 weight percent iron, and optionally additional alloy elements selected from the group consisting of tin, chromium, copper, vanadium, and nickel with the balance at least 97 weight percent zirconium, including impurities, where a necessary final heat treatment includes one of i) a SRA or PRXA (15-20% RXA) final heat treatment, or ii) a PRXA (80-95% RXA) or RXA final heat treatment.

2015030, Oct 29, 2015

Jul 6, 2015

14/791934

- CRANBERRY TOWNSHIP PA, US
ROBERT J. COMSTOCK - IRWIN PA, US
ANDREW ATWOOD - COLUMBIA SC, US
GUIRONG PAN - ELGIN SC, US
ANAND GARDE - COLUMBIA SC, US
MATS DAHLBACK - VASTERAS, SE
JONNA PARTEZANA MUNDORFF - FINLEYVILLE PA, US
ANDREW J. MUELLER - ELIZABETH PA, US

WESTINGHOUSE ELECTRIC COMPANY, LLC. - CRANBERRY TOWNSHIP PA

C22F 1/18
C22C 16/00
G21C 3/07
C22F 1/00

The invention relates to zirconium-based alloys and articles produced therefrom, such as tubing or strips, which have at least one of excellent corrosion resistance to water or steam and creep resistance at elevated temperatures in a nuclear reactor. The alloys include from about 0.2 to 1.5 weight percent niobium, from about 0.01 to 0.6 weight percent iron, from about 0.0 to 0.8 weight percent tin, from about 0.0 to 0.5 weight percent chromium, from about 0.0 to 0.3 weight percent copper, from about 0,0 to 0.3 weight percent vanadium, and from about 0.0 to 0.1 weight percent nickel with the balance at least 97 weight percent zirconium, including impurities. Further, the articles are formed by processes that include final heat treatment of (i) SRA or PRXA (0-33% RXA), or (ii) RXA or PRXA (80-100% RXA).