| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 6 | |
| #2 | Canada | 1 | |
| #3 | Switzerland | 1 | |
| #4 | Germany | 1 | |
| #5 | EPO (European Patent Office) | 1 | |
| #6 | Spain | 1 | |
| #7 | France | 1 | |
| #8 | Ireland | 1 | |
| #9 | Israel | 1 | |
| #10 | Japan | 1 | |
| #11 | Netherlands | 1 | |
| #12 | Norway | 1 | |
| #13 | Sweden | 1 | |
| #14 | United States | 1 |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wittels W | 7 |
| #2 | Wittels William | 5 |
| #3 | William Wittels | 1 |
| #4 | Uiriamu Uitsuterusu | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB2053888A | Artificial stone | |
| GB2025265A | Method of Treating Metal Plate | |
| EP0007721A1 | Method of treating metal plate | |
| IE33920B1 | Artificial stone tiles | |
| CA929326A | Artificial stone tiles | |
| IL33117D0 | Artificial stone tiles | |
| GB1271935A | Production of ceramics | |
| GB1249858A | Artificial stone tiles | |
| GB1111974A | Improvements in or relating to building blocks |