Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8013617 | Test method and apparatus for spark plug ceramic insulator | Hiroyuki Tanabe | 2011-09-06 |
| 7938706 | Deflection inspecting device for spark plug insulator, deflection inspecting method for spark plug insulator, and manufacturing method for spark plug insulator | Hirokazu Kurono | 2011-05-10 |
| 7906893 | Spark plug of internal combustion engine having glaze layers on the spark plug | Mai Moribe, Akira Suzuki | 2011-03-15 |