Issued Patents All Time
Showing 1–25 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6885261 | Dielectric filter, antenna sharing device, and communication device having a voltage controlled reactance element for tuning the center frequency | Masayuki Atokawa, Hirofumi Miyamoto, Hajime Suemasa, Yasuo Yamada | 2005-04-26 |
| 6861929 | Low-pass filter | Masamichi Ando, Yasunori Takei | 2005-03-01 |
| 6781476 | Filter having directional coupler and communication device | Yasunori Takei, Hiromitsu Ito | 2004-08-24 |
| 6590475 | Filter, antenna duplexer, and communication apparatus incorporating the same | Yasuo Yamada, Masayuki Atokawa, Hirofumi Miyamoto, Hajime Suemasa | 2003-07-08 |
| 6522220 | Frequency variable filter, antenna duplexer, and communication apparatus incorporating the same | Yasuo Yamada, Masayuki Atokawa, Hirofumi Miyamoto, Hajime Suemasa | 2003-02-18 |
| 6476687 | Dielectric filter providing TEM- and TE-mode resonators and communicaton device using the same | Hirofumi Miyamoto | 2002-11-05 |
| 6448870 | Dielectric filter, dielectric duplexer, and communication apparatus using the same | Motoharu Hiroshima, Shohachi Nishijima, Hideyuki Kato | 2002-09-10 |
| 6411176 | Voltage-controlled duplexer and communication apparatus | Masayuki Atokawa | 2002-06-25 |
| 6359529 | Filtering device comprising filters, each having a resonance line, a coupling element coupled to said resonance line, and a switch for short-circuiting said resonance line | Hitoshi Tada | 2002-03-19 |
| 6356170 | Dielectric waveguide resonator, dielectric waveguide filter, and method of adjusting the characteristics thereof | Shigeji Arakawa | 2002-03-12 |
| 6346867 | Dielectric waveguide resonator, dielectric waveguide filter, and method of adjusting the characteristics thereof | Shigeji Arakawa | 2002-02-12 |
| 6288620 | Antenna-duplexer and communication apparatus | Masayuki Atokawa, Yasuo Yamada | 2001-09-11 |
| 6281764 | Dielectric waveguide resonator, dielectric waveguide filter, and method of adjusting the characteristics thereof | Shigeji Arakawa | 2001-08-28 |
| 6255921 | Dielectric waveguide resonator, dielectric waveguide filter, and method of adjusting the characteristics thereof | Shigeji Arakawa | 2001-07-03 |
| 6160463 | Dielectric waveguide resonator, dielectric waveguide filter, and method of adjusting the characteristics thereof | Shigeji Arakawa | 2000-12-12 |
| 6020800 | Dielectric waveguide resonator, dielectric waveguide filter, and method of adjusting the characteristics thereof | Shigeji Arakawa | 2000-02-01 |
| 5952897 | Dielectric filter unit comprising internal conductors and a slit with an electrode for input/output coupling structure | Hiromi Ogura | 1999-09-14 |
| 5929725 | Dielectric filter using the TEM mode | Jun Toda, Haruo Matsumoto | 1999-07-27 |
| 4942377 | Rod type dielectric resonating device with coupling plates | Youhei Ishikawa, Toshiro Hiratsuka, Hirotsugu Abe | 1990-07-17 |
| 4865262 | Reciprocating mechanism for spinning reel for fishing | — | 1989-09-12 |
| 4839773 | Dielectric filter | Youhei Ishikawa, Toshiro Hiratsuka, Hirotsugu Abe | 1989-06-13 |
| 4830306 | Fishing reel leg with soft cover | Toshiaki Yorikane, Hideo Murakami | 1989-05-16 |
| 4821006 | Dielectric resonator apparatus | Youhei Ishikawa, Toshiro Hiratsuka, Hirotsugu Abe | 1989-04-11 |
| 4784347 | Sliding mechanism for spinning reel | Takehiro Kobayashi, Hideo Murakami | 1988-11-15 |
| 4770363 | Bearing mechanism for a spinning reel for fishing | Haruo Morita | 1988-09-13 |