Issued Patents All Time
Showing 26–49 of 49 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7031684 | Variable gain amplifier device | Shoji Otaka | 2006-04-18 |
| 7009448 | Operational amplifier circuit, sample/hold circuit and filter circuit using the operational amplifier circuit | Tetsuro Itakura | 2006-03-07 |
| 6930532 | Exponential conversion circuit and variable gain circuit | Nobuo Kanou, Tetsuro Itakura | 2005-08-16 |
| 6777999 | Exponential conversion circuit and variable gain circuit | Nobuo Kanou, Tetsuro Itakura | 2004-08-17 |
| 6774739 | Frequency converter, orthogonal demodulator and orthogonal modulator | Osamu Watanabe | 2004-08-10 |
| 6677053 | Surface-treated steel sheet and production method therefor | Kenji Morita, Akira Matsuzaki, Masaaki Yamashita, Etsuo Hamada | 2004-01-13 |
| 6610422 | Coated steel sheet and method for manufacturing the same | Toshihiko Ooi, Keiji Yoshida, Yuichiro Tanaka, Junichi Inagaki, Masaaki Yamashita +5 more | 2003-08-26 |
| 6577188 | Variable gain amplifier | Takashi Ueno, Tadashi Arai, Hiroshi Yoshida, Tetsuro Itakura | 2003-06-10 |
| 6562474 | Coated steel sheet having excellent corrosion resistance and method for producing the same | Naoto Yoshimi, Satoru Ando, Masaru Sagiyama, Akihiko Furuta, Masaaki Yamashita +6 more | 2003-05-13 |
| 6498929 | Receiver having DC offset decreasing function and communication system using the same | Hiroshi Tsurumi, Hiroshi Yoshida, Tetsuro Itakura, Akira Yasuda, Takashi Ueno +3 more | 2002-12-24 |
| 6477360 | Frequency converter | Osamu Watanabe, Hiroshi Tanimoto, Shoji Otaka | 2002-11-05 |
| 6437643 | Variable gain amplifier | Takashi Ueno, Tadashi Arai, Hiroshi Yoshida, Tetsuro Itakura | 2002-08-20 |
| 6381449 | Frequency converter | Tetsuro Itakura, Hiroshi Tanimoto | 2002-04-30 |
| 6249249 | Active array antenna system | Shuichi Obayashi, Shoji Otaka, Hiroki Shoki, Yasushi Murakami | 2001-06-19 |
| 6057723 | Phase shifter | Hiroshi Tanimoto | 2000-05-02 |
| 5995819 | Frequency converter and radio receiver using same | Osamu Watanabe, Hiroshi Tanimoto, Tetsuro Itakura, Shoji Otaka, Ryuichi Fujimoto | 1999-11-30 |
| 5867777 | Variable-gain amplifier circuit, offset control method in variable-gain amplifier circuit, radio receiver with variable-gain amplifier circuit, and radio receiving method in radio receiver with variable-gain amplifier | Tetsuro Itakura, Hiroshi Tsurumi | 1999-02-02 |
| 5841388 | A/D converter apparatus with frequency conversion function and radio apparatus using the same | Akira Yasuda, Tetsuro Itakura | 1998-11-24 |
| 5767750 | Modulator | — | 1998-06-16 |
| 5714916 | Modulator | — | 1998-02-03 |
| 5634207 | Frequency converter capable of reducing noise components in local oscillation signals | Hiroshi Tanimoto, Satoshi Arai | 1997-05-27 |
| 5534827 | Modulator | — | 1996-07-09 |
| 5311086 | Multiplying circuit with improved linearity and reduced leakage | Chikau Yakahashi, Hiroshi Tanimoto | 1994-05-10 |
| 5221490 | Rust-preventive lubricant composition for zinc-plated steel material | Yasuhisa Tajiri, Yasuo Okumura, Yasuo Tanizawa, Yoshio Nagae | 1993-06-22 |