| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 5 | |
| #2 | United States | 5 | |
| #3 | EPO (European Patent Office) | 1 | |
| #4 | Japan | 1 | |
| #5 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Machines | |
| #3 | Optics | |
| #4 | Surface technology and coating | |
| #5 | Computer technology |
| # | Name | Total Patents |
|---|---|---|
| #1 | Longman Robert James | 5 |
| #2 | Helfet Peter Roy | 4 |
| #3 | Helfet Peter R | 4 |
| #4 | Longman Robert J | 4 |
| #5 | Gardner Keith | 2 |
| #6 | Brynjolffssen Jitka | 2 |
| #7 | Humberstone Victor C | 2 |
| #8 | Pettigrew Robert M | 2 |
| #9 | Broadbent Mark J | 1 |
| #10 | Broadbent Mark John | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB9026774D0 | Improving optical disk recording performance | |
| US5137617A | Optical disk manufacture | |
| GB8815236D0 | Improvements relating to optical disks | |
| GB8815235D0 | Improvements relating to optical data storage disks | |
| US4866696A | Pre-formatted moth-eye type optical data storage member and method | |
| JPS62195741A | Photolithography |