Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10806272 | Mattress core material and bed mattress | Tsuyoshi Ando, Masakazu Kojima | 2020-10-20 |
| 6597180 | Fault point location system | Masanori Sugiura | 2003-07-22 |
| 6477475 | Fault point location system | Masanori Sugiura | 2002-11-05 |