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Dennis G. Abraham
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Concord, NC, US
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Patents Grants
last 30 patents
Information
Patent Grant
Secure establishment of cryptographic keys using persistent key com...
Patent number
6,684,334
Issue date
Jan 27, 2004
Trusted Security Solutions, Inc.
Dennis G. Abraham
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Secure establishment of cryptographic keys
Patent number
6,606,387
Issue date
Aug 12, 2003
Trusted Security Solutions, Inc.
Dennis G. Abraham
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and apparatus for initialization of cryptographic terminal
Patent number
5,745,576
Issue date
Apr 28, 1998
Visa International Service Association
Dennis G. Abraham
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
User defined function facility
Patent number
5,301,231
Issue date
Apr 5, 1994
International Business Machines Corporation
Dennis G. Abraham
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Secure computer system having privileged and unprivileged memories
Patent number
5,237,616
Issue date
Aug 17, 1993
International Business Machines Corporation
Dennis G. Abraham
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Secure translation of usage-control values for cryptographic keys
Patent number
5,177,791
Issue date
Jan 5, 1993
International Business Machines Corp.
Phil C. Yeh
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Transaction system security method and apparatus
Patent number
5,148,481
Issue date
Sep 15, 1992
International Business Machines Corporation
Dennis G. Abraham
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Secure management of keys using control vectors with multi-path che...
Patent number
5,103,478
Issue date
Apr 7, 1992
International Business Machines Corporation
Stephen M. Matyas
G07 - CHECKING-DEVICES
Information
Patent Grant
Transaction system security method and apparatus
Patent number
5,048,085
Issue date
Sep 10, 1991
International Business Machines Corporation
Dennis G. Abraham
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Secure key management using control vector translation
Patent number
4,993,069
Issue date
Feb 12, 1991
International Business Machines Corporation
Stephen M. Matyas
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Secure management of keys using control vectors
Patent number
4,941,176
Issue date
Jul 10, 1990
International Business Machines Corporation
Stephen M. Matyas
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Personal identification number processing using control vectors
Patent number
4,924,514
Issue date
May 8, 1990
International Business Machines Corporation
Stephen M. Matyas
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Secure management of keys using extended control vectors
Patent number
4,924,515
Issue date
May 8, 1990
International Business Machines Coprporation
Stephen M. Matyas
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Data cryptography operations using control vectors
Patent number
4,918,728
Issue date
Apr 17, 1990
International Business Machines Corporation
Stephen M. Matyas
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Secure component authentication system
Patent number
4,799,061
Issue date
Jan 17, 1989
International Business Machines Corporation
Dennis G. Abraham
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Image compression systems
Patent number
4,486,784
Issue date
Dec 4, 1984
International Business Machines Corporation
Dennis G. Abraham
G06 - COMPUTING CALCULATING COUNTING