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John J. Croat
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Sterling Heights, MI, US
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Patents Grants
last 30 patents
Information
Patent Grant
Hot pressed magnets formed from anisotropic powders
Patent number
5,352,301
Issue date
Oct 4, 1994
General Motors Corporation
Viswanathan Panchanathan
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Fine grained anisotropic powder from melt-spun ribbons
Patent number
5,314,548
Issue date
May 24, 1994
General Motors Corporation
Viswanathan Panchanathan
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
High-energy product rare earth-iron magnet alloys
Patent number
5,174,362
Issue date
Dec 29, 1992
General Motors Corporation
John J. Croat
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
High energy product rare earth-iron magnet alloys
Patent number
5,172,751
Issue date
Dec 22, 1992
General Motors Corporation
John J. Croat
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
High energy product rare earth-iron magnet alloys
Patent number
5,056,585
Issue date
Oct 15, 1991
General Motors Corporation
John J. Croat
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Bonded rare earth-iron magnets
Patent number
4,902,361
Issue date
Feb 20, 1990
General Motors Corporation
Robert W. Lee
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method for producing anisotropic RE-FE-B type magnetically aligned...
Patent number
4,881,985
Issue date
Nov 21, 1989
General Motors Corporation
Earl G. Brewer
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
High energy product rare earth-iron magnet alloys
Patent number
4,851,058
Issue date
Jul 25, 1989
General Motors Corporation
John J. Croat
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
High energy product rare earth-iron magnet alloys
Patent number
4,802,931
Issue date
Feb 7, 1989
General Motors Corporation
John J. Croat
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
High energy product rare earth-iron magnet alloys
Patent number
4,756,775
Issue date
Jul 12, 1988
General Motors Corporation
John J. Croat
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
High coercivity rare earth-iron magnets
Patent number
4,496,395
Issue date
Jan 29, 1985
General Motors Corporation
John J. Croat
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Selective magnetization of rare-earth transition metal alloys
Patent number
4,347,086
Issue date
Aug 31, 1982
General Motors Corporation
Andrew R. Chraplyvy
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Selective magnetization of manganese-aluminum alloys
Patent number
4,312,684
Issue date
Jan 26, 1982
General Motors Corporation
Andrew R. Chraplyvy
G11 - INFORMATION STORAGE
Information
Patent Grant
Method of making a laminated rare earth metal-cobalt permanent magn...
Patent number
4,076,561
Issue date
Feb 28, 1978
General Motors Corporation
Robert W. Lee
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER