| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 3 | |
| #2 | United States | 2 | |
| #3 | Canada | 1 | |
| #4 | China | 1 | |
| #5 | EPO (European Patent Office) | 1 | |
| #6 | Israel | 1 | |
| #7 | Republic of Korea | 1 | |
| #8 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Materials and metallurgy | |
| #3 | Audio-visual technology |
| # | Technology | |
|---|---|---|
| #1 | Treatment of glass | |
| #2 | Optical systems | |
| #3 | Television |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kawada Masakazu | 11 |
| #2 | Nakata Masashi | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CN111868595A | Spacer ring, method of manufacturing the same, lens system and method of assembling the same | |
| JP2018045003A | Spacing ring, lens system, method of manufacturing spacing ring, and method of assembling lens system | |
| JP2018014935A | Flowerpot apparatus | |
| JP2014203051A | Stereoscopic vision image imaging lens |