Average Co-Inventor Count = 3.00
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. Invacare Corporation (4 from 320 patents)
4 patents:
1. 9221006 - Oxygen concentrator having structural sieve beds
2. 8562725 - Oxygen concentrator having structural sieve beds
3. 8282717 - Oxygen concentrator having structural sieve beds
4. 7875105 - Oxygen concentrator having structural sieve beds