Issued Patents All Time
Showing 151–175 of 176 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6326863 | Matching circuit chip, filter with matching circuit, duplexer and cellular phone | Hiroshi Kushitani, Naoki Yuda, Toshio Ishizaki, Hideaki Nakakubo, Makoto Fujikawa | 2001-12-04 |
| 6313398 | Ga-doped multi-crytsalline silicon, Ga-doped multi-crystalline silicon wafer and method for producing the same | Katsushi Tokunaga, Teruhiko Hirasawa | 2001-11-06 |
| 6310525 | Dielectric laminated device and its manufacturing method | Hideaki Nakakubo, Toshio Ishizaki, Hiroshi Kagata, Tatsuya Inoue, Shoichi Kitazawa | 2001-10-30 |
| 6222431 | Balanced dielectric filter | Toshio Ishizaki, Hideaki Nakakubo, Shoichi Kitazawa | 2001-04-24 |
| 6222072 | Process for producing optically active amine | Teruaki Mukaiyama, Kiyoaki Sugi, Takushi Nagata | 2001-04-24 |
| 6202122 | Facsimile apparatus using a memory device with reloadable memory block having variable data occupancy rate | — | 2001-03-13 |
| 6177853 | Multilayer filter with electrode patterns connected on different side surfaces to side electrodes and input/output electrodes | Yoshitaka Nagatomi, Naoki Yuda, Toshio Ishizaki, Shoichi Kitazawa | 2001-01-23 |
| 6150903 | Piezoelectric filter, its manufacturing method, and intermediate frequency filter | Yasuteru Asakawa, Toshio Ishizaki, Osamu Kawasaki | 2000-11-21 |
| 6147571 | Dual-band multilayer bandpass filter | Shoichi Kitazawa, Toshio Ishizaki, Koichi Ogawa, Makoto Fujikawa, Tadanori Fujisawa +2 more | 2000-11-14 |
| 6140891 | Dielectric laminated filter | Hideaki Nakakubo, Toshio Ishizaki, Shoichi Kitazawa, Hiroshi Kushitani | 2000-10-31 |
| 6125423 | Memory device with enhanced memory management and a facsimile apparatus using the same | — | 2000-09-26 |
| 6104260 | Surface acoustic wave filter with first and second filter tracks and balanced or unbalanced terminals | Shigeru Tsuzuki, Hiroyuki Nakamura | 2000-08-15 |
| 6085071 | Antenna duplexer | Yukihiro Takeda, Masaki Kita, Hideyuki Miyake, Toshio Ishizaki, Makoto Fujikawa +1 more | 2000-07-04 |
| 6020798 | Dielectric laminated device and its manufacturing method | Hideaki Nakakubo, Toshio Ishizaki, Hiroshi Kagata, Tatsuya Inoue, Shoichi Kitazawa | 2000-02-01 |
| 5990762 | Surface acoustic wave filter and multistage filter with multiple inside busbar lead-out electrodes | Hiroyuki Nakamura, Kazunori Nishimura, Toshio Ishizaki | 1999-11-23 |
| 5986522 | Piezoelectric filter of the ladder type | Yasuteru Asakawa, Toshio Ishizaki, Tomoki Uwano, Osamu Kawasaki, Yukihiko Ise +1 more | 1999-11-16 |
| 5973579 | Ladder type intermediate frequency filter | Yasuteru Asakawa, Toshio Ishizaki, Hiroaki Kosugi | 1999-10-26 |
| 5932950 | Surface acoustic wave filter | Toshio Ishizaki, Kazunori Nishimura, Kozo Murakami | 1999-08-03 |
| 5894251 | High frequency filter having saw and dielectric filters with different frequency temperature characteristic signs | Yutaka Taguchi, Kazuo Eda, Shun-ichi Seki, Keiji Onishi | 1999-04-13 |
| 5756790 | Optically active cobalt (II) complexes and method for the preparation of optically active alcohols | Teruaki Mukaiyama, Kiyotaka Yorozu, Takushi Nagata, Kiyoaki Sugi | 1998-05-26 |
| 5667585 | Method for the preparation of wire-formed silicon crystal | Tsuguo Fukuda, Susumu Sakaguchi, Tadashi Kamioka, Teruhiko Hirasawa | 1997-09-16 |
| 5581141 | Surface acoustic wave filter | Toshio Ishizaki, Kazunori Nishimura, Kozo Murakami | 1996-12-03 |
| 5475350 | Frequency tunable resonator including a varactor | Toshio Ishizaki, Yoshihiro Nakagawa, Makoto Sakakura, Koji Hashimoto, Toshiaki Nakamura | 1995-12-12 |
| 5431741 | Silicon solar cell | Susumu Sakaguchi, Tadashi Kamioka, Teruhiko Hirasawa | 1995-07-11 |
| 5240519 | Aluminum based Mg-Si-Cu-Mn alloy having high strength and superior elongation | Hajime Kamio, Kenji Tsuchiya | 1993-08-31 |