Average Co-Inventor Count = 3.00
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. 3M Innovative Properties Company (3 from 14,087 patents)
3 patents:
1. 8573358 - Multilayer sound absorbing structure comprising mesh layer
2. 8469145 - Multilayer sound absorbing sheet
3. 8371419 - Hybrid sound absorbing sheet