Issued Patents All Time
Showing 25 most recent of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8795522 | Lubricating oil conditioning filter containing improved pelletized conditioner | Peter D. Unger, Ronald P. Rohrbach, Zafar Hussain, Weston H. Gerwin, Brian K. Artz | 2014-08-05 |
| 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 |
| 8216349 | Evaporative emissions filter | Gary B. Zulauf, Robert L. Smith, Ronald P. Rohrbach, Richard J. Berkey, Bryon W. Stremler +1 more | 2012-07-10 |
| 8216461 | Method of adding fuel additive to diesel fuel | Scott J. Tabb, Ronald P. Rohrbach, Gary B. Zulauf, Peter D. Unger, Weston H. Gerwin +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, Peter D. Unger, Weston H. Gerwin +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, Peter D. Unger, Gary B. Zulauf, Russ Johnson, David R. Rockwell | 2010-08-31 |
| 7655166 | Evaporative emissions filter | Gary B. Zulauf, Robert L. Smith, Ronald P. Rohrbach, Richard J. Berkey, Bryon W. Stremler +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, Peter D. Unger | 2009-08-18 |
| 7510652 | Filter and system apparatus for removing sulfur-containing compounds from liquid fuels | Ronald P. Rohrbach, Russell W. Johnson, Peter D. Unger, Gordon W. Jones, 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 |
| 7410585 | Apparatus and method for storing and releasing sulfur containing aromatic compounds from a fuel stream of an internal combustion engine | Ronald P. Rohrbach, Peter D. Unger, Gary B. Zulauf, Russ Johnson, David R. Rockwell | 2008-08-12 |
| 7344586 | Evaporative emissions filter | Gary B. Zulauf, Robert L. Smith, Ronald P. Rohrbach, Richard J. Berkey, Bryon W. Stremler +1 more | 2008-03-18 |
| 7316778 | Staged oil filter incorporating pelletized basic conditioner | Ronald P. Rohrbach, Gordon W. Jones, Peter D. Unger, Lixin Xue, Greg Kemenah | 2008-01-08 |
| 7291264 | Staged oil filter incorporating additive-releasing particles | Ronald P. Rohrbach, Gordon W. Jones, Peter D. Unger | 2007-11-06 |
| 7182802 | Evaporative emissions filter | Ronald P. Rohrbach, Richard J. Berkey, Bryon W. Stremler, Robert L. Smith, Peter D. Unger +1 more | 2007-02-27 |
| 7163574 | Evaporative emissions filter | Ronald P. Rohrbach, Richard J. Berkey, Bryon W. Stremler, Robert L. Smith, Peter D. Unger | 2007-01-16 |
| 6887381 | Filter apparatus for removing sulfur-containing compounds from liquid fuels, and methods of using same | Ronald P. Rohrbach, Russell W. Johnson, Peter D. Unger, Gordon W. Jones, Gary B. Zulauf | 2005-05-03 |
| 6726751 | Accordion-pleated filter material and filter element incorporating same | Ronald P. Rohrbach, Gordon W. Jones, Peter D. Unger, Alexander Lobovsky | 2004-04-27 |
| 6706092 | Chemical/Biological decontamination filter | Ronald P. Rohrbach, Gordon W. Jones, Peter D. Unger | 2004-03-16 |
| 6656360 | Fibrous system for continuously capturing metals from an aqueous stream | Ronald P. Rohrbach, Gordon W. Jones, Peter D. Unger, Russell Dondero, Lixin Xue | 2003-12-02 |
| 6623636 | Staged oil filter incorporating timed release oil conditioner | Ronald P. Rohrbach, Gordon W. Jones, Peter D. Unger | 2003-09-23 |
| 6440611 | Microcapillary battery separator including hollow fibers, and storage battery incorporating same | Kenneth Orville MacFadden, Gordon W. Jones, Lixin Xue, Ronald P. Rohrbach, Peter D. Unger +1 more | 2002-08-27 |
| 6432179 | Vapor-adsorbent filter for reducing evaporative fuel emissions, and method of using same | Alex Lobovsky, James Matrunich, Gordon W. Jones, Ronald P. Rohrbach, Gary B. Zulauf +1 more | 2002-08-13 |
| 6422729 | Method and apparatus for dehydrating a vehicle lamp housing | Ronald P. Rohrbach, Gordon W. Jones, Peter D. Unger, Gary B. Zulauf | 2002-07-23 |