Average Co-Inventor Count = 6.61
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. D1029788 - Voice masking headphone
2. D978443 - Hearing protector
3. D766520 - Hearing protector