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. Schlumberger Technology Corporation (3 from 10,200 patents)
3 patents:
1. 6610441 - Annular pack
2. 6547010 - Annular pack having mutually engageable annular segments
3. 6280874 - Annular pack