Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10394909 | Reducing redirects | Yu Sugawara, Ryoichi Imaizumi, Ken'ichi Fukushima | 2019-08-27 |
| 10007731 | Deduplication in search results | Yu Sugawara, Ryoichi Imaizumi, Ken′ichi Fukushima | 2018-06-26 |
| 9342615 | Reducing redirects | Yu Sugawara, Ryoichi Imaizumi, Ken'ichi Fukushima | 2016-05-17 |