| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 6 | |
| #2 | United Kingdom | 6 | |
| #3 | Italy | 6 | |
| #4 | United States | 6 | |
| #5 | Germany | 5 | |
| #6 | Japan | 5 |
| # | Industry | |
|---|---|---|
| #1 | Optics |
| # | Technology | |
|---|---|---|
| #1 | Cameras | |
| #2 | Processing photographic materials |
| # | Name | Total Patents |
|---|---|---|
| #1 | Long John Geoffrey | 9 |
| #2 | Long John G | 5 |
| #3 | Aston Keith | 4 |
| #4 | Jiyon Jiyofurii Rongu | 4 |
| #5 | Downing Roy | 2 |
| #6 | Watts Nichilas Paul | 1 |
| #7 | Roi Dauningu | 1 |
| #8 | Baanaado Pooru Eeruritsuhi Uor | 1 |
| #9 | Jiyon Jiafurii Rongu | 1 |
| #10 | Nikorasu Pooru Watsutsu | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4479713A | Photographic exposure masks | |
| GB2092762A | Improvements in and relating to photographic exposure masks | |
| GB1589910A | Photographic printing apparatus | |
| GB1603000A | Photographic printing or enlarging apparatus | |
| GB1552459A | Ullumination system for a photographic copying apparatus | |
| GB1585172A | Photographic processing apparatus | |
| GB1345711A | Printing of photographic colour negatives |