John E. Hasselkus has been granted 3 US patents. The first was granted in 1996 and the most recent in May 2000. John E. Hasselkus ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list John E. Hasselkus in Germantown, MD, US.
Patents per Year Patents granted per year, 1996 to 2000 Bar chart with a peak of 1 patents in 1996. peak 1 1996: 1 patents 1996 1999: 1 patents 1999 2000: 1 patents 2000
Issued Patents All Time
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Showing 1–3 of 3 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
6058102 Method and apparatus for performing service level analysis of communications network performance metrics R. Scott Drysdale , James D. Ennis, Jr. , Thomas R. Nisbet , Robert Troutman , Kenneth J. Rehbehn +1 more 2000-05-02
$20,609,000
5867483 Method and apparatus for measurement of peak throughput in packetized data networks James D. Ennis, Jr. , Robert Norberg , Robert Troutman , Matthew A. Tucker 1999-02-02
$13,606,000
5521907 Method and apparatus for non-intrusive measurement of round trip delay in communications networks James D. Ennis, Jr. , Thomas R. Nisbet , Robert Troutman 1996-05-28