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USPTO Patent Rankings Data through Dec 31, 2025
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Brian S. Core — 17 Patents

KOKohler: 16 patents #101 of 998Top 15%
Fond du Lac, WI: #27 of 383 inventorsTop 8%
Wisconsin: #2,488 of 40,088 inventorsTop 7%
Overall (All Time): #263,971 of 4,157,543Top 7%
17 Patents All Time
Brian S. Core has been granted 17 US patents while listed as an inventor at Kohler. The first was granted in 2008 and the most recent in August 2025. Brian S. Core ranks #263,971 of 4,157,543 US inventors in our database (top 6.3%). Patent records list Brian S. Core in Fond du Lac, WI, US.

Patents per Year

Patents granted per year, 2008 to 2025Bar chart with a peak of 3 patents in 2018.peak 32008: 1 patents20082011: 1 patents2012: 1 patents20122014: 1 patents2015: 1 patents20152016: 1 patents2018: 3 patents20182019: 1 patents2022: 2 patents20222023: 2 patents2024: 2 patents20242025: 1 patents2025

Issued Patents All Time

Showing 1–17 of 17 patents

Patent #TitleCo-InventorsDate
12385241 Drain system for bathtub David H. Ritter, Douglas J. Brouwer, Keith Scott Ruh, Autumn-Storm Antoinette McFaul 2025-08-12
11982362 Faucet with improved valve David H. Ritter 2024-05-14
11958065 Direct access spray selection engine for water delivery devices Evan Yee 2024-04-16
11725373 Drain system for bathtub David H. Ritter, Douglas J. Brouwer, Keith Scott Ruh, Autumn-Storm Antoinette McFaul 2023-08-15
11560957 Faucet with improved valve David H. Ritter 2023-01-24
11300217 Faucet with improved valve David H. Ritter 2022-04-12
11231116 Valve assembly David H. Ritter 2022-01-25
10281049 Valve assembly David H. Ritter 2019-05-07
10138621 Handle assembly David H. Ritter 2018-11-27
9958086 Faucet assembly David H. Ritter 2018-05-01
9915367 Valve assembly having improved rotational feel David H. Ritter, Chad J. Cochart, Douglas J. Brouwer, Christopher M. Shay, Michael Walter Smith 2018-03-13
9476508 Valve assembly having improved rotational feel David H. Ritter, Chad J. Cochart, Douglas J. Brouwer, Christopher M. Shay, Michael Walter Smith 2016-10-25
9086155 Valve assembly having improved rotational feel David H. Ritter, Chad J. Cochart, Douglas J. Brouwer, Christopher M. Shay, Michael Walter Smith 2015-07-21
8800962 Valve assembly having improved connections David H. Ritter, Chad J. Cochart, Douglas J. Brouwer, Christopher M. Shay, Michael Walter Smith 2014-08-12
8297305 Valve assembly having an improved flow path David H. Ritter, Chad J. Cochart, Douglas J. Brouwer, Christopher M. Shay, Michael Walter Smith 2012-10-30
8079381 Handle assembly for a water control valve Keith Fischer, Douglas J. Brouwer, David H. Ritter 2011-12-20
PP18904 Nepeta plant named ‘Psfike’ — 2008-06-10

Frequent Collaborators

David H. Ritter15 shared
Douglas J. Brouwer8 shared
Christopher M. Shay5 shared
Chad J. Cochart5 shared
Michael Walter Smith5 shared
Keith Scott Ruh2 shared

Nearby-Ranked Inventors

Michael John Caelwaerts17
Umut Zalluhoglu17
Austino Longo17
Till Bredbeck17
Mircea Grigore17
Achim Klein17
Manesh Nadupparambil Sekharan17
Yoshiaki Nishikawa17
Evan Sparks17