Keller; Richard L.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Keller; Richard L..The latest application filed is for "spark plug having firing pad".
- Keller; Richard L. - Whitehouse OH
- Keller; Richard L. - Plymouth MN
- Keller; Richard L. - Minneapolis MN
| Patent | Date |
|---|---|
| Spark plug having firing pad Grant 10,312,668 - Kowalski , et al. | 2019-06-04 |
| Spark Plug Having Firing Pad App 20170237235 - Kowalski; Kevin J. ; et al. | 2017-08-17 |
| Spark plug having firing pad Grant 9,673,593 - Kowalski , et al. June 6, 2 | 2017-06-06 |
| Spark plug having multi-layer sparking component attached to ground electrode Grant 9,368,943 - Kowalski , et al. June 14, 2 | 2016-06-14 |
| Spark plug having firing pad Grant 9,318,879 - Kowalski , et al. April 19, 2 | 2016-04-19 |
| Spark plug having firing pad Grant 9,231,379 - Kowalski , et al. January 5, 2 | 2016-01-05 |
| Spark plug having a thin noble metal firing pad Grant 9,130,356 - Kowalski , et al. September 8, 2 | 2015-09-08 |
| Spark Plug Having Firing Pad App 20150236482 - Kowalski; Kevin J. ; et al. | 2015-08-20 |
| Electrode core material for spark plugs Grant 9,083,156 - Ma , et al. July 14, 2 | 2015-07-14 |
| Spark plug having firing pad Grant 9,041,274 - Kowalski , et al. May 26, 2 | 2015-05-26 |
| Spark Plug Having Multi-layer Sparking Component Attached To Ground Electrode App 20140265813 - Kowalski; Kevin J. ; et al. | 2014-09-18 |
| Electrode Core Material For Spark Plugs App 20140232254 - Ma; Shuwei ; et al. | 2014-08-21 |
| Spark Plug Having Firing Pad App 20140210334 - Kowalski; Kevin J. ; et al. | 2014-07-31 |
| Spark Plug Having Firing Pad App 20140111078 - Kowalski; Kevin J. ; et al. | 2014-04-24 |
| Spark plug having a plastic upper insulator and method of construction Grant 8,680,758 - Miller , et al. March 25, 2 | 2014-03-25 |
| Spark Plug Having Firing Pad App 20140042892 - Kowalski; Kevin J. ; et al. | 2014-02-13 |
| Spark Plug Having Firing Pad App 20130320835 - Kowalski; Kevin J. ; et al. | 2013-12-05 |
| Spark plug having ground electrode tip attached to free end surface of ground electrode Grant 8,569,940 - Keller , et al. October 29, 2 | 2013-10-29 |
| Spark plug electrode configuration Grant 8,519,607 - Kowalski , et al. August 27, 2 | 2013-08-27 |
| Spark Plug Firing End Configuration App 20130076224 - Keller; Richard L. ; et al. | 2013-03-28 |
| Spark Plug Electrode Configuration App 20130002122 - Kowalski; Kevin J. ; et al. | 2013-01-03 |
| Spark Plug Having A Plastic Upper Insulator And Method Of Construction App 20100201245 - Miller; Kevin L. ; et al. | 2010-08-12 |
| Automated french fry cooking apparatus Grant 5,189,944 - Rasmussen , et al. March 2, 1 | 1993-03-02 |
| Fried dough product and method Grant 4,170,659 - Totino , et al. October 9, 1 | 1979-10-09 |
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