Average Co-Inventor Count = 1.20
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. Traffic Safety Devices Corporation (2 from 2 patents)
2. Yew Corporation (1 from 1 patent)
3 patents:
1. D431657 - Highway barrier
2. 5988934 - Highway barrier
3. 5531540 - Reinforcement system for highway barriers