Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10120943 | Preference-information gathering system, preference information gathering apparatus and preference-information gathering method | Kimiko Tsurumaki, Takuji Maekawa, Hirokazu Tanaka | 2018-11-06 |
| 8612309 | Preference information collecting system, device, method, and program | Kimiko Tsurumaki, Takuji Maekawa, Hirokazu Tanaka | 2013-12-17 |