Average Co-Inventor Count = 3.27
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. 3m Innovative Properties Company (3 from 14,059 patents)
3 patents:
1. D944379 - Vehicle air purifier
2. D891599 - Air purifier
3. D844766 - Air purifier