Issued Patents 2019
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10461714 | Class D amplifier circuit | John Paul Lesso | 2019-10-29 |
| 10432151 | Audio amplifiers | John Paul Lesso | 2019-10-01 |
| 10398917 | Drag reducer and fire-extinguishing agent | Akira Kimura, Noboru Yamaguchi, Amina TASHIRO | 2019-09-03 |
| 10329382 | Alkylene oxide polymer production method | Noboru Yamaguchi | 2019-06-25 |
| 10240445 | Fracturing fluid viscosity-controlling agent to be used in hydraulic fracturing | Noboru Yamaguchi | 2019-03-26 |
| 10171049 | Class-D amplifier circuits | John Paul Lesso | 2019-01-01 |