Average Co-Inventor Count = 1.50
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. Steffens Enterprises, Inc. (3 from 21 patents)
3 patents:
1. 5653491 - Folding cargo bay cover for pickup trucks
2. 4946217 - Pickup box covers
3. 4844531 - Folding cover for pickup box