| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 6 | |
| #2 | France | 5 | |
| #3 | United States | 5 | |
| #4 | United Kingdom | 4 | |
| #5 | Sweden | 4 | |
| #6 | Brazil | 3 | |
| #7 | Canada | 2 | |
| #8 | Japan | 1 | |
| #9 | Netherlands | 1 | |
| #10 | USSR (Union of Socialist Soviet Republics) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Computer technology | |
| #2 | Control | |
| #3 | Audio-visual technology | |
| #4 | IT methods for management | |
| #5 | Optics | |
| #6 | Consumer goods | |
| #7 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Data recognition and presentation | |
| #2 | Coin-freed | |
| #3 | Special information storage | |
| #4 | Holographic processes | |
| #5 | Data processing systems | |
| #6 | Static stores | |
| #7 | Books | |
| #8 | Money sorting | |
| #9 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hoegberg Knut Goeran | 5 |
| #2 | Malmberg Thor Anders Helge | 3 |
| #3 | Meurling Olof Wilhelm | 3 |
| #4 | Abramson Nils | 3 |
| #5 | Malmberg T | 2 |
| #6 | Abramson N | 2 |
| #7 | Bjelkhagen H | 2 |
| #8 | Sjoquist S | 2 |
| #9 | Sjoequist Stig Roland | 2 |
| #10 | Meurling O | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US4120559A | Method of establishing secret information | |
| US4047033A | Checking an identity, authority or check document or the like | |
| GB1494337A | Method and an arrangement for reading coded information from a data carrier | |
| US3959630A | Identity card having radioactive isotope of short half-life | |
| GB1386915A | Identity card | |
| US3818226A | Identity document and a method and an apparatus for checking such a document |