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David R. Chang
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Fairfield, OH, US
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Patents Grants
last 30 patents
Information
Patent Grant
Method of removing cores from ceramic matrix composite articles
Patent number
6,428,740
Issue date
Aug 6, 2002
General Electric Company
Thomas J. Dunyak
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
Method of removing cores from ceramic matrix composite articles
Patent number
6,274,078
Issue date
Aug 14, 2001
General Electric Company
Thomas J. Dunyak
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
Metallic coated article of improved environmental resistance
Patent number
4,123,594
Issue date
Oct 31, 1978
General Electric Company
David R. Chang
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Metallic coated article
Patent number
4,123,595
Issue date
Oct 31, 1978
General Electric Company
David R. Chang
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Method of applying a metallic coating with improved resistance to h...
Patent number
4,071,638
Issue date
Jan 31, 1978
General Electric Company
David R. Chang
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Metal of improved environmental resistance
Patent number
4,018,569
Issue date
Apr 19, 1977
General Electric Company
David R. Chang
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Metallic coated article with improved resistance to high temperatur...
Patent number
3,996,021
Issue date
Dec 7, 1976
General Electric Company
David R. Chang
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Metal of improved environmental resistance
Patent number
3,976,436
Issue date
Aug 24, 1976
General Electric Company
David R. Chang
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Metallic coating powder containing Al and Hf
Patent number
3,951,642
Issue date
Apr 20, 1976
General Electric Company
David R. Chang
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Patents Applications
last 30 patents
Information
Patent Application
Method of removing cores from ceramic matrix composite articles
Publication number
20020005605
Publication date
Jan 17, 2002
Thomas J. Dunyak
B28 - WORKING CEMENT, CLAY, OR STONE