| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Hong Kong | 2 | |
| #2 | United States | 2 | |
| #3 | Australia | 1 | |
| #4 | Canada | 1 | |
| #5 | China | 1 | |
| #6 | Germany | 1 | |
| #7 | EPO (European Patent Office) | 1 | |
| #8 | United Kingdom | 1 | |
| #9 | Japan | 1 | |
| #10 | Republic of Korea | 1 | |
| #11 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Mechanical elements | |
| #3 | Medical technology |
| # | Technology | |
|---|---|---|
| #1 | Punching metal | |
| #2 | Pipes | |
| #3 | Object sterilising |
| # | Name | Total Patents |
|---|---|---|
| #1 | Koizumi Kazuo | 12 |
| #2 | Kazuo Koizumi | 1 |
| Publication | Filing date | Title |
|---|---|---|
| WO2004023017A1 | Metal bellows tube, method of producing the same, and flexible tube for high-pressure fluid | |
| JPH03272767A | Fire extinguishing/deodorizing agent |