| # | Industry | |
|---|---|---|
| #1 | Optics |
| # | Technology | |
|---|---|---|
| #1 | Photomechanical semiconductor production | |
| #2 | Photosensitive materials |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rovnjev Vjatsjeslev | 5 |
| #2 | Rovnjev V | 3 |
| #3 | Vjatsjeslev Rovnjev | 1 |
| #4 | Rovnjev Vjatsjeslav | 1 |
| Publication | Filing date | Title |
|---|---|---|
| IE782128L | Multicolour printing | |
| FR2407500A1 | PROCESS FOR PREPARING NEGATIVE OR POSITIVE FILMS FOR POLYCHROMY PRINTING |