Average Co-Inventor Count = 2.00
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. Scantron Corporation (2 from 9 patents)
2 patents:
1. 7298901 - Scannable form and system
2. D519156 - Scannable form