| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 4 | |
| #2 | WIPO (World Intellectual Property Organization) | 3 | |
| #3 | Australia | 2 | |
| #4 | EPO (European Patent Office) | 1 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Special information storage | |
| #2 | Unspecified technologies | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Longman Robert | 2 |
| #2 | Andre Pascal | 2 |
| #3 | Whittingham Ian | 2 |
| #4 | Lione Richard Anthony | 2 |
| #5 | Somekh Robert | 2 |
| #6 | Gago-Sandoval Pedro | 2 |
| #7 | Longman Robert James | 2 |
| #8 | Abrams Michael John | 1 |
| #9 | Longman Robert J | 1 |
| #10 | Helfet Peter R | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB0204496D0 | Optical disc mastering | |
| GB0114023D0 | Method of sputtering optical recording films | |
| GB9903550D0 | Forming optical recording layers | |
| GB9825740D0 | Optical data storage | |
| EP0328368A2 | Improved data storage medium |