Average Co-Inventor Count = 1.67
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. Quantum Corporation (2 from 840 patents)
2 patents:
1. 6271991 - Tape cartridge
2. 5857634 - Take-up reel lock