Issued Patents All Time
Showing 25 most recent of 60 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10992112 | Fouling resistant spark plugs | Jing Zheng, Ronald P. Rohrbach, Jeffrey T. Boehler | 2021-04-27 |
| 9350143 | Anti-fouling spark plug and method of making | Ronald P. Rohrbach, Jeffrey T. Boehler, Jing Zheng | 2016-05-24 |
| 8981632 | Anti-fouling spark plug and method of making | Ronald P. Rohrbach, Jeffrey T. Boehler, Jing Zheng | 2015-03-17 |
| 8970096 | Anti-fouling spark plug and method of making | Ron Rohrbach, Jeff Boehler, Jing Zheng | 2015-03-03 |
| 8795522 | Lubricating oil conditioning filter containing improved pelletized conditioner | Ronald P. Rohrbach, Zafar Hussain, Weston H. Gerwin, Brian K. Artz, Daniel E. Bause | 2014-08-05 |
| 8729784 | Fouling resistant spark plug | Ronald P. Rohrbach, Jeffrey T. Boehler, Jing Zheng | 2014-05-20 |
| 8558439 | Anti-fouling spark plug and method of making | Ron Rohrbach, Jeff Boehler, Jing Zheng | 2013-10-15 |
| 8388838 | Additive dispersing filter and method of making | Weston H. Gerwin, Michael S. Lynch, Nageswara R. Cheekala, Zafar Hussain, Ronald P. Rohrbach +1 more | 2013-03-05 |
| 8216461 | Method of adding fuel additive to diesel fuel | Scott J. Tabb, Ronald P. Rohrbach, Gary B. Zulauf, Weston H. Gerwin, Daniel E. Bause +1 more | 2012-07-10 |
| 8216349 | Evaporative emissions filter | Gary B. Zulauf, Daniel E. Bause, Robert L. Smith, Ronald P. Rohrbach, Richard J. Berkey +1 more | 2012-07-10 |
| 7938960 | Fuel filter and method of adding fuel additive to diesel fuel | Scott J. Tabb, Ronald P. Rohrbach, Gary B. Zulauf, Weston H. Gerwin, Daniel E. Bause +1 more | 2011-05-10 |
| 7785548 | Apparatus and method for storing and releasing sulfur containing aromatic compounds from a fuel stream of an internal combustion engine | Ronald P. Rohrbach, Gary B. Zulauf, Daniel E. Bause, Russ Johnson, David R. Rockwell | 2010-08-31 |
| 7655166 | Evaporative emissions filter | Gary B. Zulauf, Daniel E. Bause, Robert L. Smith, Ronald P. Rohrbach, Richard J. Berkey +1 more | 2010-02-02 |
| 7588691 | Additive dispersing filter and method of making | Weston H. Gerwin, Michael S. Lynch, Nageswara R. Cheekala, Zafar Hussain, Ronald P. Rohrbach +1 more | 2009-09-15 |
| 7575688 | Apparatus and method for removing sulfur containing compounds from a post-refinery fuel stream | Ronald P. Rohrbach, Gary B. Zulauf, Daniel E. Bause | 2009-08-18 |
| 7517381 | Devices and methods for chemical reactive filtration | Ron Rohrbach, Dan Bause | 2009-04-14 |
| 7510652 | Filter and system apparatus for removing sulfur-containing compounds from liquid fuels | Ronald P. Rohrbach, Russell W. Johnson, Gordon W. Jones, Daniel E. Bause, Gary B. Zulauf | 2009-03-31 |
| 7481923 | Additive dispersing filter and method of making | Weston H. Gerwin, Michael S. Lynch, Nageswara R. Cheekala, Zafar Hussain, Ronald P. Rohrbach +1 more | 2009-01-27 |
| 7442223 | Complex shaped fiber for particle and molecular filtration | Ron Rohrbach, Dan Bause, Neil H. Hendricks, Jeff Miller, Adel George Tannous +2 more | 2008-10-28 |
| 7410585 | Apparatus and method for storing and releasing sulfur containing aromatic compounds from a fuel stream of an internal combustion engine | Ronald P. Rohrbach, Gary B. Zulauf, Daniel E. Bause, Russ Johnson, David R. Rockwell | 2008-08-12 |
| 7344586 | Evaporative emissions filter | Gary B. Zulauf, Daniel E. Bause, Robert L. Smith, Ronald P. Rohrbach, Richard J. Berkey +1 more | 2008-03-18 |
| 7316778 | Staged oil filter incorporating pelletized basic conditioner | Ronald P. Rohrbach, Gordon W. Jones, Daniel E. Bause, Lixin Xue, Greg Kemenah | 2008-01-08 |
| 7316782 | Filter apparatus for removing sulfur-containing compounds from liquid fuels, and methods of using same | Ronald P. Rohrbach, Russell W. Johnson, Gordon W. Jones, Damiel E. Bause, Gary B. Zulauf | 2008-01-08 |
| 7291264 | Staged oil filter incorporating additive-releasing particles | Ronald P. Rohrbach, Gordon W. Jones, Daniel E. Bause | 2007-11-06 |
| 7182802 | Evaporative emissions filter | Daniel E. Bause, Ronald P. Rohrbach, Richard J. Berkey, Bryon W. Stremler, Robert L. Smith +1 more | 2007-02-27 |