Average Co-Inventor Count = 3.46
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. Invacare Corporation (3 from 320 patents)
3 patents:
1. D583931 - Nasal mask
2. 7290546 - Nasal mask
3. D507831 - Nasal mask