| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 5 | |
| #2 | United States | 4 | |
| #3 | Germany | 3 | |
| #4 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Textiles and paper | |
| #2 | Measurement | |
| #3 | Optics |
| # | Technology | |
|---|---|---|
| #1 | Printing machines | |
| #2 | Analysing materials | |
| #3 | Photomechanical semiconductor production |
| # | Name | Total Patents |
|---|---|---|
| #1 | Monroy Johan F | 1 |
| #2 | Frederik Monroy Johan | 1 |
| #3 | Gastel Leonard A Van | 1 |
| #4 | Monroy Johan Frederik | 1 |
| #5 | Van Gastel Leonard Adriaan | 1 |
| #6 | Willem Lenaarts | 1 |
| #7 | Daniel Tollenaar | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1466960A | Viscosimeter | |
| US3531986A | Device for measuring the tack of a printing ink | |
| GB1158018A | Printability Tester | |
| FR1537930A | Testing device for printing works | |
| GB726818A | A device for checking the extent of relative slip movement between printing and impression surfaces of cylinder type printing presses | |
| US2701420A | Device for checking the process results of printing presses | |
| US2798428A | Process of four-colour printing as well as blocks to be used therefor and the printsobtained with said blocks | |
| US2719790A | Halftone screen |