| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Austria | 1 | |
| #3 | Canada | 1 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Textiles and paper |
| # | Technology | |
|---|---|---|
| #1 | Photomechanical semiconductor production | |
| #2 | Cameras | |
| #3 | Reproduction of printing surfaces | |
| #4 | Optical systems | |
| #5 | Printing processes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hatt Joseph Arthur Henry | 12 |
| Publication | Filing date | Title |
|---|---|---|
| US1235894A | Photomechanical screen. | |
| GB191314393A | Improvements in Half Tone Screens. | |
| US1134382A | Process of making printing-plates and printing in colors. | |
| US1134381A | Process for producing printing-plates. | |
| US1066611A | Half-tone screen. | |
| US896013A | Camera. | |
| US855705A | Process of printing in colors. | |
| US1013937A | Color-filter. | |
| US904613A | Camera-stand. | |
| US851593A | Camera. | |
| CA217252A | Photo process screens |