| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 5 | |
| #2 | Germany | 3 | |
| #3 | United Kingdom | 3 | |
| #4 | Japan | 2 | |
| #5 | Australia | 1 | |
| #6 | Canada | 1 | |
| #7 | Switzerland | 1 | |
| #8 | France | 1 | |
| #9 | Republic of Korea | 1 | |
| #10 | Netherlands | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Optics | |
| #3 | Textiles and paper | |
| #4 | Surface technology and coating | |
| #5 | Computer technology | |
| #6 | Audio-visual technology |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Unspecified technologies | |
| #3 | Photosensitive materials | |
| #4 | Electrography | |
| #5 | Printing processes | |
| #6 | Layered products | |
| #7 | Data recognition and presentation | |
| #8 | Paper coating | |
| #9 | Advertising |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nagafuchi Kazumasa | 11 |
| #2 | Nakashima Shin | 3 |
| #3 | Nagahuchi Kazuamasa | 2 |
| #4 | Nakajima Makoto | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US6203874B1 | Copying sheet | |
| JPH0460573A | Copy preventive film | |
| JPH047137A | Synthetic resin film for printing | |
| US4772512A | Composite film for bar code labels | |
| AU3485684A | Film for protecting documents from reproduction | |
| CA1221585A | Composite film for protecting documents from being reproduced |