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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
NK

Norbert Kassai — 3 Patents

UNUnknown: 1 patents #29,356 of 83,584Top 40%
Oberasbach, DE: #29 of 98 inventorsTop 30%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Norbert Kassai has been granted 3 US patents while listed as an inventor at Unknown. The first was granted in 2014 and the most recent in January 2023. Norbert Kassai ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Norbert Kassai in Oberasbach, DE.

Patents per Year

Patents granted per year, 2014 to 2023Bar chart with a peak of 1 patents in 2014.peak 12014: 1 patents20142021: 1 patents20212023: 1 patents2023

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
11541223 Plug valve for medical technology Michael Hopf 2023-01-03
11124334 Discharge cap for a container Hans Juergen Hopf, Michael Hopf 2021-09-21
8695624 Multi-way valve and method of producing same Hans Juergen Hopf, Alexander Hopf, Michael Hopf 2014-04-15