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Ralph Valkenberg — 5 Patents

SPStackpole International Engineered Products: 5 patents #1 of 16Top 7%
Stolberg, DE: #29 of 191 inventorsTop 20%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Ralph Valkenberg has been granted 5 US patents while listed as an inventor at Stackpole International Engineered Products. The first was granted in 2017 and the most recent in December 2020. Ralph Valkenberg ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Ralph Valkenberg in Stolberg, DE.

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
10871161 Epitrochoidal vacuum pump Luke BOUWMEESTER 2020-12-22
10247187 Variable displacement vane pump with thermo-compensation Manfred Arnold, Hans Peter Kutzer 2019-04-02
10030656 Variable displacement vane pump with integrated fail safe function — 2018-07-24
9771935 Variable displacement vane pump with thermo-compensation Manfred Arnold, Hans Peter Kutzer 2017-09-26
9534519 Variable displacement vane pump with integrated fail safe function — 2017-01-03

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