Average Co-Inventor Count = 3.43
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. Msa Technology, LLC (3 from 114 patents)
2. Mine Safety Appliances Company (1 from 242 patents)
4 patents:
1. 12514323 - Safety helmet
2. 12011057 - Safety helmet
3. 9125448 - Support for visors and face shields
4. 6264392 - Pivot joint for faceshield assembly