Average Co-Inventor Count = 3.60
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. Werner Co. (3 from 217 patents)
3 patents:
1. 8146710 - Step stool latch
2. 8104578 - Stepladder folding twin-step
3. 7931123 - Stepladder folding twin-step