Takagi; Masakazu
Patent Applications and Registrations
Patent applications and USPTO patent grants for Takagi; Masakazu.The latest application filed is for "optical signal amplifying apparatus".
- Takagi; Masakazu - Higashiosaka-shi JP
- Takagi; Masakazu - Tokyo JP
- Takagi; Masakazu - Chuo-Ku JP
- Takagi; Masakazu - Narita JP
| Patent | Date |
|---|---|
| Optical Signal Amplifying Apparatus App 20100238539 - Maeda; Yoshinobu ; et al. | 2010-09-23 |
| Switching power supply unit Grant 6,888,728 - Takagi , et al. May 3, 2 | 2005-05-03 |
| Switching power supply unit App 20040070994 - Takagi, Masakazu ; et al. | 2004-04-15 |
| Rectifying circuit and switching power supply device having the same Grant 6,687,143 - Yamamoto , et al. February 3, 2 | 2004-02-03 |
| Multi-stage DC--DC converter Grant 6,683,797 - Zaitsu , et al. January 27, 2 | 2004-01-27 |
| Switching power supply unit with series connected converter circuits Grant 6,650,552 - Takagi , et al. November 18, 2 | 2003-11-18 |
| Multi-stage DC-DC converter App 20030137853 - Zaitsu, Toshiyuki ; et al. | 2003-07-24 |
| Rectifying circuit and switching power supply device having the same App 20030039133 - Yamamoto, Junichi ; et al. | 2003-02-27 |
| Switching power supply unit App 20020191422 - Takagi, Masakazu ; et al. | 2002-12-19 |
| Semiconductor device App 20020134999 - Hirokawa, Masahiko ; et al. | 2002-09-26 |
| Switching power source Grant 5,999,420 - Aonuma , et al. December 7, 1 | 1999-12-07 |
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