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. Nebraska Book Company, Inc. (3 from 4 patents)
3 patents:
1. 9076169 - Digital delivery system and method
2. 8234178 - Automatic item-purchasing and consolidation system
3. 7958017 - Automatic book purchasing and consolidation method