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USPTO Patent Rankings Data through Dec 31, 2025
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Bruce E. Burkhardt — 4 Patents

POPolycorp: 4 patents #4 of 20Top 20%
Conestogo, CA: #6 of 13 inventorsTop 50%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Bruce E. Burkhardt has been granted 4 US patents while listed as an inventor at Polycorp. The first was granted in 2012 and the most recent in May 2014. Bruce E. Burkhardt ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Bruce E. Burkhardt in Conestogo, ON, CA.

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
8714462 Special track assembly and methods of making same W. Bradley Bedford, John G. Brooks, Richard Theodore Ellis 2014-05-06
8245950 Removable rail seal Richard Theodore Ellis 2012-08-21
8172158 Flangeway former and rail boot system Bradley W Bedford, Rick Ellis 2012-05-08
8100342 Shallow flangeway rail seal Richard Theodore Ellis 2012-01-24