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USPTO Patent Rankings Data through Dec 31, 2025
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Eric P. Janssen — 10 Patents

MVMac Valves: 10 patents #5 of 24Top 25%
Howell, MI: #75 of 595 inventorsTop 15%
Michigan: #9,527 of 86,293 inventorsTop 15%
Overall (All Time): #481,000 of 4,157,543Top 15%
10 Patents All Time
Eric P. Janssen has been granted 10 US patents while listed as an inventor at Mac Valves. The first was granted in 1993 and the most recent in January 2024. Eric P. Janssen ranks #481,000 of 4,157,543 US inventors in our database (top 11.6%). Patent records list Eric P. Janssen in Howell, MI, US.

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
11859729 Proportional solenoid valve Jeffrey Simmonds, Brett Anthony Landacre 2024-01-02
11248715 Proportional solenoid valve Jeffrey Simmonds, Brett Anthony Landacre 2022-02-15
10808860 Latching pneumatic control valve Michael Jamison, Kevin C. Williams 2020-10-20
10711915 Pilot actuated control pilot for operating valve Robert H. Neff, Matthew Neff, Jeff Simmonds, Joseph Richardson 2020-07-14
9103463 Pressure balanced solenoid operated valve Kevin C. Williams 2015-08-11
9022069 Solenoid operated valve with constant bleed port Matthew Neff 2015-05-05
8167000 Balanced solenoid valve Robert H. Neff, Jeffrey Simmonds 2012-05-01
7210501 Directly operated pneumatic valve having a differential assist return Robert H. Neff, Lynn R Long 2007-05-01
6129115 Self-latching solenoid valve assembly Thomas R. Jones 2000-10-10
5192936 Solenoid James A. Neff, Richard A. Fagerlie, Michael E. Robert 1993-03-09