Average Co-Inventor Count = 3.27
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 14,076 patents)
3 patents:
1. 11026464 - Strap retainer for attaching a chinstrap to a safety helmet
2. D878683 - Protective helmet
3. D813462 - Safety helmet