Philippe Lefebvre
32Patents
6h-index
30Co-inventors
69Inventor score
Filing activity: Sep 26, 1985 → Aug 22, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5320485A | Guide vane with a plurality of cooling circuits | Mechanical Engineering; Lighting; Heating | 32 | Expired |
| US4662821A | Automatic control device of a labyrinth seal clearance in a turbo jet engine | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US5865553A | Liquid-ink writing instrument having a reservoir fitted with a system to prevent loss of priming | Performing Operations; Transporting | 20 | Expired |
| US4773817A | Labyrinth seal adjustment device for incorporation in a turbomachine | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US6608285B2 | Hybrid arc/laser welding with earth contactor position control | Performing Operations; Transporting | 9 | Expired |
| US9988546B2 | Colour pencil lead | Performing Operations; Transporting | 7 | Active |
| US10814665B2 | Writing or coloring pencil | Chemistry; Metallurgy | 5 | Active |
| US10308063B2 | Paper pencil lead | Chemistry; Metallurgy | 5 | Active |
| US6392194B1 | Process for the MIG welding of aluminium and its alloys in pulsed mode or unmodulated-spray mode | Performing Operations; Transporting | 5 | Expired |
| US6586700B2 | Process for the MIG welding of aluminum and its alloys with a shielding gas of the Ar/He/O2 type | Performing Operations; Transporting | 4 | Expired |
| US9844832B2 | Laser nozzle having an internal mobile element and an external cover | Performing Operations; Transporting | 4 | Active |
| US9610652B2 | Laser nozzle having an external mobile element made of electrically insulating material and an insert made of electrically conductive material | Performing Operations; Transporting | 4 | Active |
| US9604310B2 | Laser nozzle having an external mobile element | Performing Operations; Transporting | 4 | Active |
| US10076806B2 | Laser nozzle comprising an element movable in a gas layer | Performing Operations; Transporting | 3 | Active |
| US9616525B2 | Laser nozzle with mobile element of improved external profile | Performing Operations; Transporting | 3 | Active |
| US6437288B1 | Process and unit for the mig welding of aluminum and its alloys | Performing Operations; Transporting | 3 | Expired |
| US6770841B2 | Use of helium/nitrogen gas mixtures in up to 8kW laser welding | Performing Operations; Transporting | 2 | Expired |
| US10316208B2 | Pencil for writing or colouring | Performing Operations; Transporting | 2 | Active |
| US10774232B2 | Wax-based coloring crayon with a watercolor effect | Chemistry; Metallurgy | 2 | Active |
| US6815635B2 | Use of helium/nitrogen gas mixtures for laser welding tailored blanks | Performing Operations; Transporting | 2 | Expired |
| US9321131B2 | Method for CO2 laser welding with a dynamic jet nozzle | Performing Operations; Transporting | 1 | Active |
| US7385158B2 | Method and installation for laser welding with a N2/He gas mixture, the N2/He content being controlled according to the laser power | Performing Operations; Transporting | 1 | Expired |
| US8977970B2 | Method and system for handling media in an instant messaging environment | Electricity | 1 | Active |
| US10786868B2 | Laser nozzle with mobile element | Performing Operations; Transporting | 0 | Active |
| US11970623B2 | Dry erase ink with improved drying time | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.