Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5334085 | Process for the manufacture of an impregnated cathode and a cathode obtained by this process | — | 1994-08-02 |
| 4910079 | Method for the fabrication of an impregnated cathode and cathode obtained thereby | Serge Vilminot, Dominique Brion, Bernard Carriere, Véronique HEBERT | 1990-03-20 |
| 4494035 | Thermoelectric cathode for a hyperfrequency valve and valves incorporating such cathodes | Pierre Palluel | 1985-01-15 |
| 4471266 | Delay line for a traveling-wave tube cooled by heat pipes and a traveling-wave tube comprising a delay line of this type | M. Georges Fleury | 1984-09-11 |
| 4459323 | Process for producing an impregnated cathode with an integrated grid, cathode obtained by this process and electron tube equipped with such a cathode | Didier Grauleau | 1984-07-10 |
| 4429250 | Direct heating cathode for high frequency thermionic tube | Guy Clerc | 1984-01-31 |
| 4427916 | Heating element for indirectly heated cathode and method for the manufacture of such an element | — | 1984-01-24 |
| 4393328 | Hot cathode, its production process and electron tube incorporating such a cathode | Pierre Palluel | 1983-07-12 |
| 4302702 | Thermionic cathode having an embedded grid, process for its fabrication, and high frequency electron tubes using such a cathode | Jean Montgaillard | 1981-11-24 |