Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Chris E. DiFrancesco — 14 Patents

COCormetech: 14 patents #1 of 22Top 5%
Mitsubishi Electric: 1 patents #15,491 of 25,717Top 65%
Durham, NC: #356 of 4,103 inventorsTop 9%
North Carolina: #3,601 of 45,564 inventorsTop 8%
Overall (All Time): #332,869 of 4,157,543Top 9%
14 Patents All Time
Chris E. DiFrancesco has been granted 14 US patents while listed as an inventor at Cormetech. The first was granted in 2010 and the most recent in September 2021. Chris E. DiFrancesco ranks #332,869 of 4,157,543 US inventors in our database (top 8.0%). Patent records list Chris E. DiFrancesco in Durham, NC, US.

Patents per Year

Patents granted per year, 2010 to 2021Bar chart with a peak of 4 patents in 2010.peak 42010: 4 patents20102012: 2 patents20122014: 2 patents20142017: 2 patents20172019: 1 patents20192020: 1 patents20202021: 2 patents2021

Issued Patents All Time

Showing 1–14 of 14 patents

Patent #TitleCo-InventorsDate
11125134 Diffuser assemblies and catalytic reactors comprising the same Mark Schirmer, Christian Trefzger, Stephen M Lyons, Colby A. Burtt, William D. Buynitzky 2021-09-21
11083996 SCR catalyst modules and associated catalytic reactors Christian Trefzger, Josh Andreas, Colby A. Burtt 2021-08-10
10690035 Diffuser assemblies and catalytic reactors comprising the same Mark Schirmer, Christian Trefzger, Steve M. Lyons, Colby A. Burtt, William D. Buynitzky 2020-06-23
10226737 Catalyst modules and applications thereof Scot Pritchard, Eric Baker Howell, Jeremy Thomas Freeman 2019-03-12
9707541 Gradient catalyst compositions and applications thereof Christian Trefzger, Raymond Oh 2017-07-18
9675934 Honeycomb catalytic assemblies and applications thereof James C. Altizer 2017-06-13
8910468 Exhaust gas treatment catalyst, exhaust gas treatment method, and exhaust gas treatment apparatus Yoshiaki Obayashi, Katsumi Nochi, Toshio Koyanagi 2014-12-16
8901033 Catalyst compositions and applications thereof Christian Trefzger, Raymond Oh 2014-12-02
8277737 Catalyst systems James C. Altizer, Thomas W. Hastings, Edward F. Kassman, Christian Trefzger 2012-10-02
8137633 Compositions and methods for treating exhaust gases Kozo Iida 2012-03-20
7833932 Compositions and methods for treating exhaust gases Kozo Iida 2010-11-16
7807110 Catalyst systems James C. Altizer, Thomas W. Hastings, Edward F. Kassman, Christian Trefzger 2010-10-05
7776786 Catalyst systems advantageous for high particulate matter environments Thomas W. Hastings, Edward F. Kassmann, Christian Trefzger 2010-08-17
7658898 Compositions and methods for treating exhaust gases Kozo Iida 2010-02-09