| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 3 | |
| #2 | Switzerland | 2 | |
| #3 | United Kingdom | 2 | |
| #4 | Italy | 2 | |
| #5 | Austria | 1 | |
| #6 | Belgium | 1 | |
| #7 | France | 1 | |
| #8 | Japan | 1 | |
| #9 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Optics |
| # | Technology | |
|---|---|---|
| #1 | Photomechanical semiconductor production |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hieber Helmut | 9 |
| #2 | Schwarz Horst | 7 |
| #3 | Horusuto Shiyubuarutsu | 1 |
| #4 | Scharz Horst | 1 |
| #5 | Herumuuto Hiiberu | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE3431250C1 | Contact grid for contrast control | |
| DE2624930A1 | GRID FOR Rotogravure PRINTING | |
| DE2449377A1 | Contact raster for reprographic techniciques - has series of adjacent vignetted half tone raster elements on a film material |