| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Sweden | 6 | |
| #2 | Germany | 4 | |
| #3 | Canada | 2 | |
| #4 | Switzerland | 2 | |
| #5 | United States | 2 | |
| #6 | Denmark | 1 | |
| #7 | Finland | 1 | |
| #8 | France | 1 | |
| #9 | United Kingdom | 1 | |
| #10 | Norway | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Measurement | |
| #3 | Machines | |
| #4 | Chemical engineering | |
| #5 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Shaping clay | |
| #3 | Separation | |
| #4 | Cyclones | |
| #5 | Measuring force, work and fluid pressure | |
| #6 | Geophysics | |
| #7 | Measuring length, angles and areas | |
| #8 | Finishing work on buildings | |
| #9 | General building constructions | |
| #10 | Percussive tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Jonell Per Olof | 11 |
| #2 | Elmgren Kjell Ingvar | 8 |
| #3 | Jonell Per-Olof | 3 |
| #4 | Per-Olof Jonell | 2 |
| #5 | Sven Melker Nilsson | 2 |
| #6 | Melker Nilsson Sven | 2 |
| #7 | Olof Jonell Per | 2 |
| Publication | Filing date | Title |
|---|---|---|
| GB2094852A | Submarine core drilling unit | |
| DK80881A | Drilling for underwork | |
| FI801206A | Foerfarande och maskin foer att konstatera foerekomsten av vissa bestaondsdelar i marken | |
| SE8000089L | Arrangement related to drilling rigs for prospecting work under water | |
| CA1021593A | Pore water pressure measuring device | |
| DE2437740A1 | Measurement of settlements occurring in the earth - with hose of non-magnetic material introduced into earth |