Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847905 | Method of encoding speech signals using a multipulse excitation signal having amplitude-corrected pulses | Olivier Passien | 1989-07-11 |
| 4199462 | Compositions based on alkenyl succinimides, a method of preparing them, and lubricant compositions containing them | Gerard Soula | 1980-04-22 |