Average Co-Inventor Count = 4.44
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. International Business Machines Corporation (2 from 164,219 patents)
2 patents:
1. 5633572 - Back-up power supply with replaceable battery pack
2. 5193050 - Enclosure for electronic subsystems in a data processing system