Average Co-Inventor Count = 4.00
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. Quaker State Investment Corporation (2 from 8 patents)
2 patents:
1. 6135191 - Collapsible vehicle sun shade
2. 6095230 - Vehicle sun shades