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Darrell Wayne Christianson — 5 Patents

WEWestech Engineering: 5 patents #1 of 27Top 4%
Boone, IA: #17 of 56 inventorsTop 35%
Iowa: #3,116 of 15,303 inventorsTop 25%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Darrell Wayne Christianson has been granted 5 US patents while listed as an inventor at Westech Engineering. The first was granted in 2021 and the most recent in October 2023. Darrell Wayne Christianson ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Darrell Wayne Christianson in Boone, IA, US.

Patents per Year

Patents granted per year, 2021 to 2023Bar chart with a peak of 3 patents in 2021.peak 32021: 3 patents20212022: 1 patents20222023: 1 patents2023

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
11780741 Modular underdrain systems Rand S Faaborg, Clifford Dale Barber, Brian Leo Brink, Scott Allen Pallwitz, Chad Carpenter 2023-10-10
11247918 Multi-media clarification systems and methods Darin St. Germain, Jonathan Bay Farrell, Brian Lee Primrose 2022-02-15
11130693 Combination biological contactor and self-backwashing filter systems Thomas Martin Dumbaugh, Eric Allen Lawrence, Rand S Faaborg, Brian Lee Primrose, Rene Ann Carson 2021-09-28
10941050 Modular underdrain systems Rand S Faaborg, Clifford Dale Barber, Brian Leo Brink, Scott Allen Pallwitz, Chad Carpenter 2021-03-09
10913667 Multi-media clarification systems and methods Darin St. Germain, Jonathan Bay Farrell, Brian Lee Primrose 2021-02-09

Frequent Collaborators

Brian Lee Primrose3 shared
Rand S Faaborg3 shared
Chad Carpenter2 shared
Brian Leo Brink2 shared
Darin St. Germain2 shared
Clifford Dale Barber2 shared

Nearby-Ranked Inventors

Joseph L. Mann5
Terry Richard Linn5
Ikuo DEGUCHI5
Swapnil Kumar5
Zachary W. Gyugyi5
Xiaoxue CHEN5
Mohankumar Krishnan VALIYAMBATH5
Baoquan Tan5
Jack Long5