Jack Ehrhardt has been granted 4 US patents while listed as an inventor at Digital Video Express . The first was granted in 2000 and the most recent in April 2010. Jack Ehrhardt ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Jack Ehrhardt in Richmond, VA, US.
Patents per Year Patents granted per year, 2000 to 2010 Bar chart with a peak of 1 patents in 2000. peak 1 2000: 1 patents 2000 2001: 1 patents 2001 2007: 1 patents 2007 2010: 1 patents 2010
Issued Patents All Time
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Showing 1–4 of 4 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
7698570 Digital content distribution system and method Robert Wilhelm Schumann , Richard Whittemore , David Goldschlag , David William Kravitz , Siu-Leong Iu +3 more 2010-04-13
$20,036,000
7162642 Digital content distribution system and method Robert Wilhelm Schumann , Richard Whittemore , David Goldschlag , David William Kravitz , Siu-Leong Iu +3 more 2007-01-09
6285774 System and methodology for tracing to a source of unauthorized copying of prerecorded proprietary material, such as movies Robert Wilhelm Schumann , Siu-Leong Iu , Kobad Bugwadia , Guillaume Mercier , Shiva Ramadoss +1 more 2001-09-04
6078328 Compressed video graphics system and methodology Robert Wilhelm Schumann , Michael Bergeron , Jo Janet Mikula , Mark O. Harrison, Sr. 2000-06-20