Issued Patents All Time
Showing 26–50 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7068903 | Optical element using one-dimensional photonic crystal and spectroscopic device using the same | Shigeo Kittaka, Kazuaki Oya, Masatoshi Nara, Takahiro Asai | 2006-06-27 |
| 7034932 | Deposit detector and controller using the detector | Fumitoshi Kobayashi, Hideki Imanishi, Harunobu Yoshida, Masahide Wakisaka, Tatsumi Tokuda | 2006-04-25 |
| 7009701 | Optical element and spectroscopic device using the same | Shigeo Kittaka, Masatoshi Nara, Tatsuhiro Nakazawa, Kazuaki Oya | 2006-03-07 |
| 7002480 | Deposit detector and control device using it | Fumitoshi Kobayashi, Harunobu Yoshida, Tatsumi Tokuda | 2006-02-21 |
| 6998350 | Method for forming micro groove structure | Tatsuhiro Nakazawa | 2006-02-14 |
| 6968096 | Diffraction device using photonic crystal | Shigeo Kittaka, Kazuaki Oya, Vladimir Serikov | 2005-11-22 |
| 6924457 | Laser processing method to a class substrate and an optical diffraction element obtained thereby, and a method for manufacturing optical elements | Tadashi Koyama | 2005-08-02 |
| 6919961 | Adhering substance detector and controller using the same | Fumitoshi Kobayashi, Hideki Imanishi, Harunobu Yoshida, Masahide Wakisaka, Tatsumi Tokuda | 2005-07-19 |
| 6914715 | Optical element | Tatsuhiro Nakazawa, Shigeo Kittaka, Kazuaki Oya, Masatoshi Nara | 2005-07-05 |
| 6903877 | Gradient-index lens, and method for producing the same | — | 2005-06-07 |
| 6645603 | Laser processing method to a glass substrate and an optical diffraction element obtained thereby, and a method for manufacturing optical elements | Tadashi Koyama | 2003-11-11 |
| 6470712 | Method of changing the surface of a glass substrate containing silver, by using a laser beam | Tadashi Koyama, Masahiro Oikawa, Kenjiro Hamanaka | 2002-10-29 |
| 6397161 | Method for stabilizing output of rain sensor and protection method therefor | Shuhei Tanaka, Tadashi Koyama | 2002-05-28 |
| 6291797 | Laser machining method for glass substrate, diffraction type optical device fabricated by the machining method, and method of manufacturing optical device | Tadashi Koyama | 2001-09-18 |
| 6285037 | Liquid drop detection method and apparatus therefor | Tadashi Koyama, Shuhei Tanaka | 2001-09-04 |
| 6262389 | Laser-processable glass substrate and laser processing method | Tadashi Koyama | 2001-07-17 |
| 6239570 | Wiper controller apparatus of water drop sensitive type | Shuhei Tanaka, Tadashi Koyama | 2001-05-29 |
| 6239444 | Water drop detector on transparent substrate and initiating method and output stabilizing method therefor | Shuhei Tanaka, Tadashi Koyama | 2001-05-29 |
| 6220058 | Method of changing the surface of a glass substrate containing silver, by using a laser beam | Tadashi Koyama, Masahiro Oikawa, Kenjiro Hamanaka | 2001-04-24 |
| 6147753 | Multilayer, cushioned liquid drop detector | Tadashi Koyama, Shuhei Tanaka, Hideki Imanishi | 2000-11-14 |
| 6143382 | Glass substrate having fine holes | Tadashi Koyama, Hideki Imanishi | 2000-11-07 |
| 6097167 | Water drop detector or transparent substrate and initiating method and output stabilizing method therefor | Shuhei Tanaka, Tadashi Koyama | 2000-08-01 |
| 6008467 | Laser processing method to an optical waveguide | Tadashi Koyama | 1999-12-28 |
| 5998782 | Water drop detector on transparent substrate | Tadashi Koyama, Shuhei Tanaka, Hideki Imanishi | 1999-12-07 |
| 5991049 | Transparent substrate having rain sensor | Shuhei Tanaka, Tadashi Koyama, Hideki Imanishi | 1999-11-23 |