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USPTO Patent Rankings Data through Dec 31, 2025
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Lawrence E. Duwell — 22 Patents

KOKohler: 21 patents #75 of 998Top 8%
Plymouth, WI: #11 of 153 inventorsTop 8%
Wisconsin: #1,688 of 40,088 inventorsTop 5%
Overall (All Time): #189,202 of 4,157,543Top 5%
22 Patents All Time
Lawrence E. Duwell has been granted 22 US patents while listed as an inventor at Kohler. The first was granted in 2012 and the most recent in July 2025. Lawrence E. Duwell ranks #189,202 of 4,157,543 US inventors in our database (top 4.6%). Patent records list Lawrence E. Duwell in Plymouth, WI, US.

Issued Patents All Time

Showing 1–22 of 22 patents

Patent #TitleCo-InventorsDate
12345035 Toilet with non-vitreous flush engine Billy Jack Ahola, Andrew L. Smith, Mark E. Baumgartner, Donald G. Bogenschuetz, Tobin J. Vetting +1 more 2025-07-01
12163321 Universal canister flush valve Andrew L. Smith, Billy Jack Ahola, Donald G. Bogenschuetz, Peter W. Swart, Jeffrey T. Laundre +9 more 2024-12-10
11866921 Toilet with non-vitreous flush engine Billy Jack Ahola, Andrew L. Smith, Mark E. Baumgartner, Donald G. Bogenschuetz, Tobin J. Vetting +1 more 2024-01-09
11761189 Plumbing fixture with drain-casted jet orifice Andrew L. Smith, Donald G. Bogenschuetz, Billy Jack Ahola, Peter W. Swart, Scott R. Krebs 2023-09-19
11421413 Plumbing fixture with drain-casted jet orifice Andrew L. Smith, Donald G. Bogenschuetz, Billy Jack Ahola, Peter W. Swart, Scott R. Krebs 2022-08-23
11401132 Retractable cord management system Andrew L. Smith, Billy Jack Ahola, Alexander V. LeTourneau, Scott R. Krebs, Donald G. Bogenschuetz +1 more 2022-08-02
11286655 Universal canister flush valve Andrew L. Smith, Billy Jack Ahola, Donald G. Bogenschuetz, Peter W. Swart, Jeffrey T. Laundre +9 more 2022-03-29
11180910 Toilet with non-vitreous flush engine Billy Jack Ahola, Andrew L. Smith, Mark E. Baumgartner, Donald G. Bogenschuetz, Tobin J. Vetting +1 more 2021-11-23
11028567 Plumbing fixture with drain-casted jet orifice Andrew L. Smith, Donald G. Bogenschuetz, Billy Jack Ahola, Peter W. Swart, Scott R. Krebs 2021-06-08
10738448 Toilet coupling Peter W. Swart, John F. Emmerling, Scott R. Krebs, Billy Jack Ahola, Andrew L. Smith +1 more 2020-08-11
10414540 Toilet seat package Jacob Barry Meicher, Peter W. Swart 2019-09-17
9816259 Water tank system for toilet Billy Jack Ahola, Andrew L. Smith, Lawrence Westphal, Peter W. Swart, Mark E. Baumgartner +3 more 2017-11-14
D747786 Urinal Billy Jack Ahola, John F. Emmerling, Mark E. Baumgartner, Andrew L. Smith, Tobin J. Vetting +2 more 2016-01-19
D747448 Urinal Billy Jack Ahola, John F. Emmerling, Mark E. Baumgartner, Andrew L. Smith, Tobin J. Vetting +2 more 2016-01-12
9233774 Packaging for plumbing fixtures Peter W. Swart, Michael J. Pagel, Chad Jorgensen 2016-01-12
D747447 Urinal Billy Jack Ahola, John F. Emmerling, Mark E. Baumgartner, Andrew L. Smith, Tobin J. Vetting +2 more 2016-01-12
D743012 Urinal Billy Jack Ahola, John F. Emmerling, Mark E. Baumgartner, Andrew L. Smith, Tobin J. Vetting +2 more 2015-11-10
8763803 Packaging for plumbing fixtures Peter W. Swart, Michael J. Pagel, Chad Jorgensen 2014-07-01
D693674 Packaging for plumbing fixtures Peter W. Swart, Michael J. Pagel, Chad Jorgensen 2013-11-19
D684464 Packaging for plumbing fixtures Peter W. Swart, Michael J. Pagel, Chad Jorgensen 2013-06-18
D678056 Packaging for plumbing fixtures Peter W. Swart, Michael J. Pagel, Chad Jorgensen 2013-03-19
D668144 Packaging for plumbing fixtures Peter W. Swart, Michael J. Pagel, Chad Jorgensen 2012-10-02