Average Co-Inventor Count = 3.46
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. Minnesota Mining and Manufacturing Company (2 from 7,865 patents)
2. 3m Innovative Properties Company (1 from 14,076 patents)
3 patents:
1. 6136143 - Surface treating article including a hub
2. D409340 - Hub
3. D408601 - Surface treating article