NAGATOMI KENJI has a total of 14 patent applications. Its first patent ever was published in 2009. It filed its patents most often in United States. Its main competitors in its focus markets audio-visual technology and optics are TERADA DENKI SEISAKUSHO KK, HOTTA TOHRU and NIPPON SEIKI HOUSEKI KOGYO KK.
| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 14 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Optics |
| # | Technology | |
|---|---|---|
| #1 | Special information storage | |
| #2 | Optical systems |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nagatomi Kenji | 14 |
| #2 | Yoshie Masayuki | 2 |
| #3 | Kasahara Shinsei | 2 |
| #4 | Shirane Shigeharu | 2 |
| #5 | Tsuchiya Yoichi | 1 |
| #6 | Takahashi Seiichiro | 1 |