| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 9 | |
| #2 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Textiles and paper |
| # | Technology | |
|---|---|---|
| #1 | Fillers | |
| #2 | Certain plastics | |
| #3 | Shaping of plastics | |
| #4 | Form printing surfaces | |
| #5 | Stamps |
| # | Name | Total Patents |
|---|---|---|
| #1 | Matsushita Ikuzo | 11 |
| #2 | Nagata Yoshiaki | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2018147868A1 | Stamp set | |
| JP2017052101A | Method for production of synthetic resin-made stamp | |
| JP2007152748A | Stamp | |
| JP2005059350A | Seal showcase | |
| JP2005041157A | Self-inking rubber stamp and its manufacturing method | |
| JP2005014257A | Stamper for ball | |
| JP2005007803A | Seal | |
| JP2003285523A | Stamp device | |
| JP2003305932A | Stamping apparatus | |
| JP2003175663A | Stamp |