Average Co-Inventor Count = 3.91
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. American Power Conversion Corporation (3 from 328 patents)
3 patents:
1. D445403 - Surge protector
2. D439562 - Surge protector
3. D411981 - Electrical surge protector unit for desk top products