Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11074402 | Linguistically consistent document annotation | Chikako Oyanagi, Akihiro Nakayama | 2021-07-27 |
| 11003854 | Adjusting an operation of a system based on a modified lexical analysis model for a document | Akihiro Nakayama, Kei Sugano | 2021-05-11 |