Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10490984 | Method of producing composite for forming electrode of ignition plug and method of producing ignition plug | — | 2019-11-26 |
| 9431796 | Method for manufacturing spark plug | — | 2016-08-30 |
| 9065257 | Method of manufacturing electrode complex for forming electrode of spark plug, and method of manufacturing spark plug | Ryuji Emoto | 2015-06-23 |
| 6765683 | Interferometer system and method of manufacturing projection optical system using same | — | 2004-07-20 |
| 6456382 | Interferometer that measures aspherical surfaces | Takashi Gemma, Shigeru Nakayama, Hajime Ichikawa | 2002-09-24 |
| 6344898 | Interferometric apparatus and methods for measuring surface topography of a test surface | Takashi Gemma, Hajime Ichikawa, Shigeru Nakayama, Bruce Jacobsen | 2002-02-05 |
| 6312373 | Method of manufacturing an optical system | — | 2001-11-06 |