Average Co-Inventor Count = 6.67
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 14,087 patents)
3 patents:
1. D532203 - Roller
2. D531816 - Roller caddy
3. D518260 - Cleaning head for a cleaning tool