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USPTO Patent Rankings Data through Dec 31, 2025
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David M. Kruithoff — 9 Patents

SMSimplex Manufacturing: 6 patents #1 of 2Top 50%
VIVan Andel Research Institute: 1 patents #18 of 48Top 40%
Vancouver, WA: #263 of 1,812 inventorsTop 15%
Washington: #11,701 of 76,902 inventorsTop 20%
Overall (All Time): #535,341 of 4,157,543Top 15%
9 Patents All Time
David M. Kruithoff has been granted 9 US patents while listed as an inventor at Simplex Manufacturing. The first was granted in 1988 and the most recent in August 2023. David M. Kruithoff ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list David M. Kruithoff in Vancouver, WA, US.

Patents per Year

Patents granted per year, 1988 to 2023Bar chart with a peak of 2 patents in 2019.peak 21988: 1 patents19882005: 1 patents20052009: 1 patents20092016: 1 patents20162018: 1 patents20182019: 2 patents20192022: 1 patents20222023: 1 patents2023

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
11717711 Aerial fire suppression system Mark D. Zimmerman 2023-08-08
11439852 Aerial fire suppression system Mark D. Zimmerman 2022-09-13
10406390 Aerial fire suppression system Mark D. Zimmerman 2019-09-10
10369392 Aerial fire suppression system Mark D. Zimmerman 2019-08-06
9981150 Aerial fire suppression system Mark D. Zimmerman 2018-05-29
9333379 Aerial fire suppression system Mark D. Zimmerman 2016-05-10
7547424 Method and apparatus for making partitioned slides Brian B. Haab 2009-06-16
6976696 Transportable medical apparatus Jason M. O'Krangley 2005-12-20
4753296 Vegetable harvester — 1988-06-28

Frequent Collaborators

Mark D. Zimmerman6 shared
Jason M. O'Krangley1 shared
Brian B. Haab1 shared

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