Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8548546 | Pulse oximetry and pulse oximeter | Takuo Aoyagi, Michio Kanemoto, Teiji Ukawa | 2013-10-01 |
| 8024021 | Time-segmented pulse oximetry and pulse oximeter performing the same | Takuo Aoyagi, Naoki Kobayashi | 2011-09-20 |
| 7206621 | Pulse oximeter | Takuo Aoyagi, Naoki Kobayashi, Teiji Ukawa | 2007-04-17 |
| 6671526 | Probe and apparatus for determining concentration of light-absorbing materials in living tissue | Takuo Aoyagi, Sunao Takeda, Cheng-tai Xie, Michio Kanemoto | 2003-12-30 |
| 6230035 | Apparatus for determining concentrations of light-absorbing materials in living tissue | Takuo Aoyagi, Chen Xie, Michio Kanemoto | 2001-05-08 |
| 5766125 | Apparatus for determining the concentration of light-absorbing materials in blood | Takuo Aoyagi, Michio Kanemoto, Cheng-tai Xie, Naoki Kobayashi, Hideaki Hirahara | 1998-06-16 |
| 5720284 | Apparatus for measuring hemoglobin | Takuo Aoyagi, Michio Kanemoto, Cheng-tai Xie | 1998-02-24 |
| 5666952 | Tissue transmitted light sensor | Takuo Aoyagi | 1997-09-16 |
| 5662104 | Method of measuring the quantity of attenuation of light transmitted through blood and photo sensor used for the method | Cheng-tai Xie | 1997-09-02 |
| 5313940 | Photo-electric pulse wave measuring probe | Cheng-tai Xie, Takuo Aoyagi | 1994-05-24 |
| 5278627 | Apparatus for calibrating pulse oximeter | Takuo Aoyagi, Yoshiaki Shindo, Masayuki Kato | 1994-01-11 |
| 5103835 | Impedance monitoring device for preventing urinary incontinence | Akio Yamada | 1992-04-14 |