RK

Roger E. Koepsel

BR Brunswick: 21 patents #40 of 1,301Top 4%
Overall (All Time): #202,847 of 4,157,543Top 5%
21
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12391353 Marine drives and methods of making marine drives so as to minimize deleterious effects of cavitation John O. Scherer, III, Andrew Gunderson 2025-08-19
11981411 Marine drives and methods of making marine drives so as to minimize deleterious effects of cavitation John O. Scherer, III, Andrew Gunderson 2024-05-14
11713102 Marine drives and methods of making marine drives so as to minimize deleterious effects of cavitation John O. Scherer, III, Andrew Gunderson 2023-08-01
11459074 Marine drives and methods of making marine drives so as to minimize deleterious effects of cavitation John O. Scherer, III, Andrew Gunderson 2022-10-04
9745948 Marine propeller and method of design thereof 2017-08-29
7637722 Marine propeller David Dewitt, Jeremy L. Alby 2009-12-29
7086836 Dual rate torque transmitting device for a marine propeller Mitesh B. Sheth, Michael P. Mihelich, John A. Tuchscherer, Daniel J. Schlagenhaft 2006-08-08
6340290 Controllable pitch propeller with a fail safe increased pitch movement Carl Gerard Schott 2002-01-22
6068529 Marine propulsion unit with dual water inlet structure Robert B. Weronke, Michael A. Karls, Donald F. Harry 2000-05-30
5902160 Twin propeller marine propulsion unit Robert B. Weronke, Michael A. Karls, Donald F. Harry 1999-05-11
5791950 Twin propeller marine propulsion unit Robert B. Weronke, Michael A. Karls, Donald F. Harry 1998-08-11
5290147 Variable pitch marine propeller with shift biasing and synchronizing mechanism Michael A. Karls, Ronald M. Steiner 1994-03-01
5236310 Marine propeller with performance pitch, including five blade version Ronald M. Steiner 1993-08-17
5219272 Variable pitch marine propeller with hydrodynamic shifting Ronald M. Steiner, Michael A. Karls 1993-06-15
5104292 Marine propeller with performance pitch, including five blade version Ronald M. Steiner 1992-04-14
D319210 Five blade marine propeller John E. Duprey, Edward M. Thull 1991-08-20
4993151 Method of making an easily removed marine propeller Ronald M. Steiner, Hubert S. Gilgenbach, Terence C. Reinke 1991-02-19
4925369 Easily removed marine propeller Ronald M. Steiner, Hubert S. Gilgenbach, Terence C. Reinke 1990-05-15
4897061 Gearcase exhaust vent for a marine propulsion system Ronald M. Steiner 1990-01-30
4789303 Marine propeller carry handle and emergency spare kit Michael E. Frazzell, William J. Gius 1988-12-06
4331429 Symmetrical propeller Ronald M. Steiner, Daniel G. Wilcox 1982-05-25