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Paul C. Van Oorschot
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Ottawa, CA
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Patents Grants
last 30 patents
Information
Patent Grant
Computer network security system and method having unilateral enfor...
Patent number
7,174,563
Issue date
Feb 6, 2007
Entrust, Limited
Michael Brownlie
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Systems and methods providing interactions between multiple servers...
Patent number
7,010,582
Issue date
Mar 7, 2006
Entrust Limited
Ray C. H. Cheng
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for controlling program execution and program...
Patent number
6,694,434
Issue date
Feb 17, 2004
Entrust Technologies Limited
William G. McGee
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Apparatus and method for reducing transmission bandwidth and storag...
Patent number
6,567,914
Issue date
May 20, 2003
Entrust Technologies Limited
Michael K. Just
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Encryption and decryption system and method with content analysis p...
Patent number
6,393,568
Issue date
May 21, 2002
Entrust Technologies Limited
Michel M. Ranger
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and apparatus for public key management
Patent number
6,370,249
Issue date
Apr 9, 2002
Entrust Technologies, Ltd.
Paul C. Van Oorschot
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for correcting improper encryption and/or for...
Patent number
6,341,164
Issue date
Jan 22, 2002
Entrust Technologies Limited
Lee Dilkie
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Public key cryptography based security system to facilitate secure...
Patent number
6,317,829
Issue date
Nov 13, 2001
Entrust Technologies Limited
Paul C. Van Oorschot
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and apparatus for access to user-specific encryption informa...
Patent number
6,229,894
Issue date
May 8, 2001
Entrust Technologies, Ltd.
Paul C. Van Oorschot
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method for creating communities of trust in a secure communication...
Patent number
6,215,872
Issue date
Apr 10, 2001
Entrust Technologies Limited
Paul C. Van Oorschot
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Computer network security system and method having unilateral enfor...
Patent number
6,202,157
Issue date
Mar 13, 2001
Entrust Technologies Limited
Michael Brownlie
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and apparatus for use in determining validity of a certifica...
Patent number
6,134,550
Issue date
Oct 17, 2000
Entrust Technologies Limited
Paul C. Van Oorschot
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and apparatus for creating communities of trust in a secure...
Patent number
6,134,327
Issue date
Oct 17, 2000
Entrust Technologies Ltd.
Paul C. Van Oorschot
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Computer security system and method with on demand publishing of ce...
Patent number
6,128,740
Issue date
Oct 3, 2000
Entrust Technologies Limited
Ian Curry
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and apparatus for extending secure communication operations...
Patent number
6,092,201
Issue date
Jul 18, 2000
Entrust Technologies
James Arthur Turnbull
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Key management system for mixed-trust environments
Patent number
5,850,443
Issue date
Dec 15, 1998
Entrust Technologies, Ltd.
Paul C. Van Oorschot
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method for efficient management of certificate revocation lists and...
Patent number
5,699,431
Issue date
Dec 16, 1997
Northern Telecom Limited
Paul C. Van Oorschot
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method of building fast MACS from hash functions
Patent number
5,664,016
Issue date
Sep 2, 1997
Northern Telecom Limited
Bart K. B. Preneel
H04 - ELECTRIC COMMUNICATION TECHNIQUE