Average Co-Inventor Count = 1.50
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. Esb Incorporated (2 from 63 patents)
2 patents:
1. 4091180 - Vent system with flame arresting capability
2. 3956022 - Storage battery with carrying device