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Jack Ehrhardt
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Richmond, VA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Digital content distribution system and method
Patent number
7,698,570
Issue date
Apr 13, 2010
Dolby Laboratories Licensing Corporation
Robert Wilhelm Schumann
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Digital content distribution system and method
Patent number
7,162,642
Issue date
Jan 9, 2007
Digital Video Express, L.P.
Robert Wilhelm Schumann
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
System and methodology for tracing to a source of unauthorized copy...
Patent number
6,285,774
Issue date
Sep 4, 2001
Digital Video Express, LP
Robert W. Schumann
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Compressed video graphics system and methodology
Patent number
6,078,328
Issue date
Jun 20, 2000
Digital Video Express, LP
Robert W. Schumann
G06 - COMPUTING CALCULATING COUNTING
Patents Applications
last 30 patents
Information
Patent Application
Digital Content Distribution System and Method
Publication number
20070286421
Publication date
Dec 13, 2007
Robert Wilhelm Schumann
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Content packet distribution system
Publication number
20020067914
Publication date
Jun 6, 2002
Robert Wilhelm Schumann
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Digital content distribution system and method
Publication number
20020021805
Publication date
Feb 21, 2002
Robert Wilhelm Schumann
G06 - COMPUTING CALCULATING COUNTING