Issued Patents All Time
Showing 76–100 of 111 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4658650 | Vibration and acoustic wave detecting device employing a piezoelectric element | Muneo Yorinaga, Sumiharu Yokoiwa | 1987-04-21 |
| 4574616 | Vibration detecting apparatus | Kazuhiko Miura, Takashi Hattori, Tadashi Ozaki | 1986-03-11 |
| 4466405 | Feedback type ignition timing control system for internal combustion engines | Tadashi Hattori, Yoshinori Ootsuka, Kenji Goto, Daisaku Sawada | 1984-08-21 |
| 4465047 | Knock detecting apparatus for combustion engines | Tadashi Hattori, Yoshinori Ootsuka | 1984-08-14 |
| 4462247 | Knock detecting apparatus for internal combustion engines | Tadashi Hattori, Masanori Hanaoka, Yukihide Hashiguchi, Yoshinori Ootsuka | 1984-07-31 |
| 4452069 | Method of and apparatus for sensing knocking in internal combustion engine | Tadashi Hattori, Masanori Hanaoka, Yukihide Hashiguchi, Yoshinori Ootsuka | 1984-06-05 |
| 4438647 | Ignition range detector for internal combustion engines | Tadashi Ozaki, Tadashi Hattori | 1984-03-27 |
| 4439707 | Spark plug with a wide discharge gap | Tadashi Hattori, Minoru Nishida, Minoru Ohta | 1984-03-27 |
| 4439708 | Spark plug having dual gaps | Tadashi Hattori, Minoru Nishida, Minoru Ohta | 1984-03-27 |
| 4424705 | Engine knock sensing apparatus | Tadashi Hattori, Masanori Hanaoka, Yukihide Hashiguchi, Yoshinori Ootsuka | 1984-01-10 |
| 4414840 | Knock detecting apparatus for internal combustion engines | Tadashi Hattori, Yoshinori Ootsuka | 1983-11-15 |
| 4409816 | Knock detecting apparatus for an internal combustion engine | Tadashi Hattori, Yoshinori Ootsuka | 1983-10-18 |
| 4403505 | Ignition range detector for internal combustion engine | Tadashi Hattori, Tadashi Ozaki | 1983-09-13 |
| 4385606 | Ignition timing regulating device for internal combustion engine | Tadashi Hattori, Kenji Goto, Daisaku Sawada, Takashi Shigematu, Minoru Nishida | 1983-05-31 |
| 4379403 | Knock detecting apparatus for internal combustion engines | Tadashi Hattori, Yoshinori Ootsuka | 1983-04-12 |
| 4366702 | Knock detecting apparatus for internal combustion engines | Tadashi Hattori, Yoshinori Ootsuka | 1983-01-04 |
| 4357825 | Knock detecting apparatus for internal combustion engines | Tadashi Hattori, Yoshinori Ootsuka | 1982-11-09 |
| 4357919 | Ignition timing control apparatus for internal combustion engines | Tadashi Hattori, Yoshinori Ootsuka | 1982-11-09 |
| 4345558 | Knock detecting apparatus for an internal combustion engine | Tadashi Hattori, Yoshinori Ootsuka | 1982-08-24 |
| 4341189 | Knock detecting apparatus for combustion engines | Tadashi Hattori, Yoshinori Ootsuka | 1982-07-27 |
| 4337643 | Knock detecting apparatus for internal combustion engine | Tadashi Hattori, Yoshinori Ootsuka | 1982-07-06 |
| 4336707 | Knock detecting apparatus for internal combustion engines | Tadashi Hattori, Yoshinori Ootsuka | 1982-06-29 |
| 4328779 | Feedback type ignition timing control system for internal combustion engines | Tadashi Hattori, Yoshinori Ootsuka, Kenji Goto, Daisaku Sawada | 1982-05-11 |
| 4319480 | Knock detector device for internal combustion engines | Tadashi Hattori, Yoshinori Ootsuka | 1982-03-16 |
| 4316440 | Knock detecting apparatus for internal combustion engine | Tadashi Hattori, Yoshinori Ootsuka | 1982-02-23 |