| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 4 | |
| #2 | Austria | 2 | |
| #3 | France | 2 | |
| #4 | Sweden | 2 | |
| #5 | United States | 2 | |
| #6 | Belgium | 1 | |
| #7 | Canada | 1 | |
| #8 | Germany | 1 | |
| #9 | Denmark | 1 | |
| #10 | Spain | 1 | |
| #11 | Finland | 1 | |
| #12 | United Kingdom | 1 | |
| #13 | Ireland | 1 | |
| #14 | Israel | 1 | |
| #15 | Netherlands | 1 | |
| #16 | Norway | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Mechanical elements | |
| #3 | Consumer goods | |
| #4 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Shaping of plastics | |
| #2 | Certain plastics | |
| #3 | Pipes | |
| #4 | Fillers | |
| #5 | Producing goods from plastic | |
| #6 | Swimming pools | |
| #7 | Unspecified technologies | |
| #8 | Live-saving devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Plontke E | 5 |
| #2 | Plontke Erich | 4 |
| #3 | Erich Plontke | 2 |
| #4 | Hans Keller-Hoeriger | 1 |
| #5 | Walter Kuennecke | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3737362A | Pressing tool for fabricating welded branched pipe connections from weldable thermoplastic materials | |
| IE34107L | A method of and apparatus for producing a pipe branch joint | |
| US3634167A | Method of fabricating welded branched pipe connections from weldable thermoplastic materials | |
| ES339428A1 | Method of welding thermoplastic material | |
| CA907275A | Methods of welding thermoplastic material |