Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9212621 | Piston and method of construction thereof | Marc Brandt | 2015-12-15 |
| 8680758 | Spark plug having a plastic upper insulator and method of construction | Kevin L. Miller, Richard L. Keller, William J. Walker, Jr., James D. Lykowski, Shuwei Ma +7 more | 2014-03-25 |
| 8641467 | Spark ignition device and ground electrode therefor and methods of construction thereof | Frederick J. Quitmeyer, Kevin J. Kowalski | 2014-02-04 |
| 8643262 | Spark ignition device and ground electrode therefor and methods of construction thereof | Frederick J. Quitmeyer, Kevin J. Kowalski | 2014-02-04 |
| 8288930 | Spark ignition device and ground electrode therefor and methods of construction thereof | Frederick J. Quitmeyer, Kevin J. Kowalski | 2012-10-16 |
| 7795791 | One piece shell high thread spark plug | Michael S Joseph, Richard E. Callahan | 2010-09-14 |
| 7059926 | Method of making a spark plug having a multi-tiered center wire assembly | Lawrence Geer, Thomas Nohl | 2006-06-13 |
| 7053623 | Spark ignition system with diagnostic capabilities | James D. Lykowski | 2006-05-30 |
| 7019448 | Spark plug having a multi-tiered center wire assembly | Lawrence Geer, Thomas Nohl | 2006-03-28 |
| 6078131 | Sealing a spark plug electrode | — | 2000-06-20 |