| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 2 | |
| #2 | United Kingdom | 2 | |
| #3 | Italy | 2 | |
| #4 | Netherlands | 2 | |
| #5 | Sweden | 2 | |
| #6 | United States | 2 | |
| #7 | Australia | 1 | |
| #8 | Belgium | 1 | |
| #9 | Brazil | 1 | |
| #10 | Canada | 1 | |
| #11 | Switzerland | 1 | |
| #12 | German Democratic Republic | 1 | |
| #13 | Egypt | 1 | |
| #14 | Spain | 1 | |
| #15 | France | 1 | |
| #16 | Japan | 1 | |
| #17 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Chemical engineering | |
| #3 | Textiles and paper | |
| #4 | Electrical machinery and energy | |
| #5 | Machine tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Turnhout Jan Van | 4 |
| #2 | Van Turnhout Jan | 4 |
| #3 | Turnhout J | 3 |
| #4 | Rieke J C | 2 |
| #5 | Van Turnhout J | 2 |
| #6 | Rieke Johannes C | 2 |
| #7 | Yan Fuan Tarunhouto | 1 |
| #8 | Rieke Johannes Cornelis | 1 |
| #9 | Yohanesu Korunerisu Rieke | 1 |
| Publication | Filing date | Title |
|---|---|---|
| NL7805515A | Clamp for internal gripping and centering of pipe ends - has hydraulic cylinders to expand elements radially onto inner pipe wall | |
| AU3249478A | Electert filter material | |
| CH600952A5 | Electrically charged fibre filter prodn | |
| CA1050481A | Method for the manufacture of an electret fibrous filter |