Warner Jan de Putter
19Patents
9h-index
7Co-inventors
61Inventor score
Filing activity: Mar 27, 1972 → Aug 4, 1981
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3943273A | Electrically conducting plastic pipe system | Mechanical Engineering; Lighting; Heating | 30 | Expired |
| US4452303A | Device and a method for recovering heat from the soil | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4120325A | Electrically conducting plastic pipe system | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4150087A | Tube of thermoplastics with thickened end | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4103320A | Thermally insulated pipe with electrically conducting portions for dissipating static electricity | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4080999A | Fiber reinforced sandwich tube | Performing Operations; Transporting | 13 | Expired |
| US4131407A | Device for forming tube with thickened socket end | Emerging Cross-Sectional Technologies | 11 | Expired |
| US3991150A | Method for forming a plastic pipe | Performing Operations; Transporting | 10 | Expired |
| US4119122A | Pipe with an outer foam plastic covering | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US4028039A | Removal of injection moulded products | Performing Operations; Transporting | 6 | Expired |
| US4112795A | Process for perforating plastics tubes | Emerging Cross-Sectional Technologies | 5 | Expired |
| US3947000A | Extruder drive | Performing Operations; Transporting | 3 | Expired |
| US3931853A | Device for the supply and discharge of cooling liquid in the worms of an extruder press | Performing Operations; Transporting | 3 | Expired |
| US4351791A | Method for installing a sealing body in a groove of a socket and pipe part of plastic material | Performing Operations; Transporting | 3 | Expired |
| US4022249A | Fibrous tube for membrane filtration with a tearing member | Performing Operations; Transporting | 3 | Expired |
| US4077758A | Device for deforming hollow sections | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US4131541A | Removing coagulable substances from an aqueous medium | Performing Operations; Transporting | 2 | Expired |
| US3999925A | Extruder for corrugated tube | Performing Operations; Transporting | 1 | Expired |
| US4088307A | Extruder with degassing | Performing Operations; Transporting | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.