Average Co-Inventor Count = 4.00
ph-index = 3
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. Leybold Aktiengesellschaft (3 from 393 patents)
3 patents:
1. 5542257 - Cryogenic pump with an essentially cup-shaped housing
2. 5400604 - Cryopump and process for regenerating said cryopump
3. 5111667 - Two-stage cryopump