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Walter A. Johnson
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Towanda, PA, US
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last 30 patents
Information
Patent Grant
Hydrometallurgical process for producing finely divided spherical m...
Patent number
5,114,471
Issue date
May 19, 1992
GTE Products Corporation
Walter A. Johnson
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Hydrometallurgical process for producing irregular shaped powders w...
Patent number
5,102,454
Issue date
Apr 7, 1992
GTE Products Corporation
Walter A. Johnson
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Process for producing spherical glass particles
Patent number
4,961,770
Issue date
Oct 9, 1990
GTE Products Corporation
Walter A. Johnson
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Low oxygen content fine spherical copper particles and process for...
Patent number
4,944,797
Issue date
Jul 31, 1990
GTE Products Corporation
Preston B. Kemp
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Spherical titanium based powder particles
Patent number
4,943,322
Issue date
Jul 24, 1990
GTE Products Corporation
Preston B. Kemp
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Hydrometallurgical process for producing finely divided iron based...
Patent number
4,927,456
Issue date
May 22, 1990
GTE Products Corporation
Nelson E. Kopatz
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Spherical light metal based powder particles and process for produc...
Patent number
4,923,509
Issue date
May 8, 1990
GTE Products Corporation
Preston B. Kemp
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Process of making prealloyed tungsten alloy powders
Patent number
4,913,731
Issue date
Apr 3, 1990
GTE Products Corporation
Nelson E. Kopatz
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Method for producing aluminum oxide coated iron-aluminum alloy powder
Patent number
4,900,587
Issue date
Feb 13, 1990
GTE Products Corporation
Joseph E. Ritsko
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Method for producing aluminum oxide coated iron powder
Patent number
4,900,590
Issue date
Feb 13, 1990
GTE Products Corporation
Joseph E. Ritsko
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Method for producing aluminum oxide coated cobalt powder
Patent number
4,898,749
Issue date
Feb 6, 1990
GTE Products Corporation
Joseph E. Ritsko
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Process for producing fine copper flakes
Patent number
4,884,754
Issue date
Dec 5, 1989
GTE Products Corporation
Preston B. Kemp
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Process for producing prealloyed tungsten alloy powders
Patent number
4,885,028
Issue date
Dec 5, 1989
GTE Products Corporation
Nelson E. Kopatz
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Process for producing fine copper powder with enhanced sinterability
Patent number
4,880,170
Issue date
Nov 14, 1989
GTE Products Corporation
Preston B. Kemp
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Hydrometallurgical process for producing spherical maraging steel p...
Patent number
4,859,237
Issue date
Aug 22, 1989
GTE Products Corporation
Walter A. Johnson
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Process for producing tungsten heavy alloy sheet
Patent number
4,847,045
Issue date
Jul 11, 1989
GTE Products Corporation
Preston B. Kemp
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Iron group based and chromium based fine spherical particles
Patent number
4,836,850
Issue date
Jun 6, 1989
GTE Products Corporation
Preston B. Kemp
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Process for producing tungsten heavy alloy sheet
Patent number
4,832,907
Issue date
May 23, 1989
GTE Products Corporation
Walter A. Johnson
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Process for producing finely divided spherical metal powders contai...
Patent number
4,802,915
Issue date
Feb 7, 1989
GTE Products Corporation
Nelson E. Kopatz
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Process for producing tungsten heavy alloy sheet using hydrometallu...
Patent number
4,800,064
Issue date
Jan 24, 1989
GTE Products Corporation
Preston B. Kemp
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Process for producing tungsten heavy alloy sheet using high tempera...
Patent number
4,793,969
Issue date
Dec 27, 1988
GTE Products Corporation
Walter A. Johnson
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Hydrometallurgical process for producing irregular morphology powders
Patent number
4,792,351
Issue date
Dec 20, 1988
GTE Products Corporation
Walter A. Johnson
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Hydrometallurgical process for producing spherical maraging steel p...
Patent number
4,787,934
Issue date
Nov 29, 1988
GTE Products Corporation
Walter A. Johnson
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Process for producing spherical titanium based powder particles
Patent number
4,783,216
Issue date
Nov 8, 1988
GTE Products Corporation
Preston B. Kemp
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Low oxygen content iron group based and chromium based fine spheric...
Patent number
4,783,215
Issue date
Nov 8, 1988
GTE Products Corporation
Preston B. Kemp
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Process for producing spherical refractory metal based powder parti...
Patent number
4,783,218
Issue date
Nov 8, 1988
GTE Products Corporation
Preston B. Kemp
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Low oxygen content fine shperical particles and process for produci...
Patent number
4,783,214
Issue date
Nov 8, 1988
GTE Products Corporation
Preston B. Kemp
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Process for producing spherical glass particles
Patent number
4,781,741
Issue date
Nov 1, 1988
GTE Products Corporation
Walter A. Johnson
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Process for producing spherical light metal based powder particles
Patent number
4,780,131
Issue date
Oct 25, 1988
GTE Products Corporation
Preston B. Kemp
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Process for producing iron group based and chromium based fine sphe...
Patent number
4,778,515
Issue date
Oct 18, 1988
GTE Products Corporation
Preston B. Kemp
B22 - CASTING POWDER METALLURGY