Average Co-Inventor Count = 2.00
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. Sellstrom Manufacturing Company (3 from 10 patents)
3 patents:
1. 6412420 - Cable by-pass device and system
2. 6401244 - Welding helmet and face plate
3. D444919 - Welding helmet