DR

David H. Ritter

KO Kohler: 15 patents #107 of 998Top 15%
Delphi Technologies: 1 patents #2,130 of 4,124Top 55%
Microsoft: 1 patents #24,826 of 40,388Top 65%
Overall (All Time): #266,030 of 4,157,543Top 7%
17
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12385241 Drain system for bathtub Brian S. Core, Douglas J. Brouwer, Keith Scott Ruh, Autumn-Storm Antoinette McFaul 2025-08-12
11982362 Faucet with improved valve Brian S. Core 2024-05-14
11725373 Drain system for bathtub Brian S. Core, Douglas J. Brouwer, Keith Scott Ruh, Autumn-Storm Antoinette McFaul 2023-08-15
11560957 Faucet with improved valve Brian S. Core 2023-01-24
11300217 Faucet with improved valve Brian S. Core 2022-04-12
11231116 Valve assembly Brian S. Core 2022-01-25
10281049 Valve assembly Brian S. Core 2019-05-07
10138621 Handle assembly Brian S. Core 2018-11-27
9958086 Faucet assembly Brian S. Core 2018-05-01
9915367 Valve assembly having improved rotational feel Chad J. Cochart, Douglas J. Brouwer, Christopher M. Shay, Brian S. Core, Michael Walter Smith 2018-03-13
9476508 Valve assembly having improved rotational feel Chad J. Cochart, Douglas J. Brouwer, Christopher M. Shay, Brian S. Core, Michael Walter Smith 2016-10-25
9086155 Valve assembly having improved rotational feel Chad J. Cochart, Douglas J. Brouwer, Christopher M. Shay, Brian S. Core, Michael Walter Smith 2015-07-21
8800962 Valve assembly having improved connections Chad J. Cochart, Douglas J. Brouwer, Christopher M. Shay, Brian S. Core, Michael Walter Smith 2014-08-12
8297305 Valve assembly having an improved flow path Chad J. Cochart, Douglas J. Brouwer, Christopher M. Shay, Brian S. Core, Michael Walter Smith 2012-10-30
8079381 Handle assembly for a water control valve Keith Fischer, Douglas J. Brouwer, Brian S. Core 2011-12-20
7396283 Needle roller retainer for tripot joint Scott J. Perrow 2008-07-08
6112186 Distributed system for facilitating exchange of user information and opinion using automated collaborative filtering Christopher P. Bergh, Max Edward Metral, Jonathan Sheena, James J. Sullivan 2000-08-29