Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8053957 | Piezoelectric vibrating piece having arm ends with excitation electrodes of opposite polarity and piezoelectric vibrator, oscillatory, electronic apparatus and radio wave timepiece having same | — | 2011-11-08 |
| 8001193 | Data communications system and data communications method for detecting unsolicited communications | Masaru Takahashi, Masashi Yamashita, Kazuo Sugiyama, Youji Oosako, Manhee Jo | 2011-08-16 |
| 7890588 | Unwanted mail discriminating apparatus and unwanted mail discriminating method | Masaru Takahashi | 2011-02-15 |