Average Co-Inventor Count = 3.27
ph-index = 2
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. Societe Nationale Elf Aquitaine (3 from 235 patents)
3 patents:
1. 4873842 - Three-phase heat pump
2. 4784217 - Thermochemical method and device for storing and unstoring heat
3. 4682476 - Three-phase heat pump