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Ralph C. Merkle
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Sunnyvale, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Systems and methods for non-interactive session key distribution wi...
Patent number
7,400,732
Issue date
Jul 15, 2008
Xerox Corporation
Jessica N. Staddon
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Content rendering apparatus
Patent number
7,269,576
Issue date
Sep 11, 2007
Contentguard Holdings, Inc.
Mark J. Stefik
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Digital works having usage rights and method for creating the same
Patent number
7,225,160
Issue date
May 29, 2007
Contentguard Holdings, Inc.
Mark J. Stefik
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Record and related method for storing encoded information using ove...
Patent number
6,993,655
Issue date
Jan 31, 2006
Xerox Corporation
David L. Hecht
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Public key distribution using an approximate linear function
Patent number
6,839,839
Issue date
Jan 4, 2005
Xerox Corporation
Ralph C. Merkle
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Secure token-based document server
Patent number
6,601,102
Issue date
Jul 29, 2003
Xerox Corporation
Margery A. Eldridge
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and system for self-replicating manufacturing stations
Patent number
6,510,359
Issue date
Jan 21, 2003
Zyvex Corporation
Ralph C. Merkle
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Grant
Secure token-based document server
Patent number
6,397,261
Issue date
May 28, 2002
Xerox Corporation
Margery A. Eldridge
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Protected shareware
Patent number
6,330,549
Issue date
Dec 11, 2001
Xerox Corporation
Ralph C. Merkle
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
System for controlling the distribution and use of digital works ha...
Patent number
5,634,012
Issue date
May 27, 1997
Xerox Corporation
Mark J. Stefik
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Reversible charge transfer and logic utilizing them
Patent number
5,357,548
Issue date
Oct 18, 1994
Xerox Corporation
Ralph C. Merkle
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Document copy authentication
Patent number
5,157,726
Issue date
Oct 20, 1992
Xerox Corporation
Ralph C. Merkle
G07 - CHECKING-DEVICES
Information
Patent Grant
Method and apparatus for data encryption
Patent number
5,003,597
Issue date
Mar 26, 1991
Xerox Corporation
Ralph C. Merkle
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Digital signature system and method based on a conventional encrypt...
Patent number
4,881,264
Issue date
Nov 14, 1989
Ralph C. Merkle
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
Systems and methods for non-interactive session key distribution wi...
Publication number
20040017916
Publication date
Jan 29, 2004
XEROX Corporation
Jessica N. Staddon
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Secure token-based document server
Publication number
20020095570
Publication date
Jul 18, 2002
XEROX Corporation
Margery A. Eldridge
G06 - COMPUTING CALCULATING COUNTING