| # | Industry | |
|---|---|---|
| #1 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Writing or drawing tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Matsumoto Hiroyuki | 7 |
| #2 | Miura Masao | 1 |
| #3 | Tsukahara Osamu | 1 |
| Publication | Filing date | Title |
|---|---|---|
| FR1446192A | Writing instrument with tracer member in hard fibrous material and its cartridge | |
| FR1462216A | Writing instrument | |
| FR1444361A | Advanced writing instrument | |
| FR1434004A | Writing instrument | |
| FR1430936A | Writing instrument with tracer in hard fibrous material | |
| CA804896A | Writing device | |
| CA842456A | Writing instrument | |
| CA830157A | Pen consisting of a fibre core for using an ink pigment | |
| CA829637A | Hard fiber core pen and its cartridge | |
| CA773854A | Writing implement | |
| CA804807A | Writing instrument having an interchangeable writing pad formed of hardened fiber | |
| CA800211A | Hard fiber core pen | |
| CA818883A | Mechanical pencil |