| # | Country | Total Patents | |
|---|---|---|---|
| #1 | WIPO (World Intellectual Property Organization) | 19 | |
| #2 | United States | 13 | |
| #3 | Australia | 2 | |
| #4 | China | 1 | |
| #5 | Republic of Korea | 1 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Basic materials chemistry | |
| #3 | Packaging and shipping | |
| #4 | Machines | |
| #5 | Computer technology | |
| #6 | Audio-visual technology | |
| #7 | Medical technology |
| # | Name | Total Patents |
|---|---|---|
| #1 | Takeuchi Youji | 10 |
| #2 | Shiraishi Katsuhiko | 8 |
| #3 | Iwamoto Kiyoshi | 6 |
| #4 | Kobayashi Takeshi | 6 |
| #5 | Iida Hisashi | 6 |
| #6 | Kamagata Tadashi | 6 |
| #7 | Ogura Norio | 6 |
| #8 | Okumura Shigeru | 6 |
| #9 | Matsumoto Kazuaki | 6 |
| #10 | Miyamoto Masaru | 4 |
| Publication | Filing date | Title |
|---|---|---|
| WO2007049401A1 | Shaft surface structure for writing implement | |
| US7070352B2 | Writing implement | |
| WO02064380A1 | Writing implement | |
| WO02055317A1 | Ball-point pen refill | |
| WO0105604A1 | Writing implement | |
| WO0023129A1 | Injector needle enclosing device and self-standing auxiliary member | |
| AU8462198A | Ink follower for water-base ballpoint pens and method of manufacturing same |