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Richard Henry Ahlert
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San Jose, CA, US
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last 30 patents
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Patent Grant
Method of making magnetic disk with boron carbide overcoat layer an...
Patent number
6,010,601
Issue date
Jan 4, 2000
International Business Machines Corporation
Richard Henry Ahlert
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disk with boron carbide overcoat layer
Patent number
5,897,931
Issue date
Apr 27, 1999
International Business Machines Corporation
Richard Henry Ahlert
G11 - INFORMATION STORAGE
Information
Patent Grant
Getter layer lead structure for eliminating resistance increase phe...
Patent number
5,828,532
Issue date
Oct 27, 1998
International Business Machines Corporation
Richard H. Ahlert
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disk with boron carbide overcoat layer
Patent number
5,750,231
Issue date
May 12, 1998
International Business Machines Corporation
Richard Henry Ahlert
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disk with boron carbide overcoat layer
Patent number
5,552,204
Issue date
Sep 3, 1996
International Business Machines Corporation
Richard H. Ahlert
G11 - INFORMATION STORAGE
Information
Patent Grant
Barium ferrite thin film for longitudinal recording
Patent number
5,492,775
Issue date
Feb 20, 1996
International Business Machines Corporation
Richard H. Ahlert
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Magnetic recording disk, magnetoresistive read head, inductive writ...
Patent number
5,227,212
Issue date
Jul 13, 1993
International Business Machines Corporation
Richard H. Ahlert
G11 - INFORMATION STORAGE
Information
Patent Grant
Process for fabricating thin film metal alloy magnetic recording di...
Patent number
5,149,409
Issue date
Sep 22, 1992
International Business Machines Corporation
Richard H. Ahlert
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Thin film magnetic recording disk comprising alternating layers of...
Patent number
5,051,288
Issue date
Sep 24, 1991
International Business Machines Corporation
Richard H. Ahlert
G11 - INFORMATION STORAGE
Information
Patent Grant
Carbon overcoat for a thin film magnetic recording disk containing...
Patent number
5,030,494
Issue date
Jul 9, 1991
International Business Machines Corporation
Richard H. Ahlert
G11 - INFORMATION STORAGE
Information
Patent Grant
Multilayered vertical magnetic recording medium
Patent number
4,749,628
Issue date
Jun 7, 1988
International Business Machines Corporation
Richard H. Ahlert
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording medium with an underlayer and a cobalt-based mag...
Patent number
4,654,276
Issue date
Mar 31, 1987
International Business Machines Corporation
Richard H. Ahlert
G11 - INFORMATION STORAGE