Average Co-Inventor Count = 3.00
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. The Nasdaq Omx Group, Inc. (5 from 58 patents)
2. The Nasdaq Stock Market, Inc. (1 from 13 patents)
6 patents:
1. 7983983 - Arbitrage of tracking securities
2. 7983985 - Balancing arbitragable tracking securities
3. 7813992 - Balancing arbitragable tracking securities
4. 7809627 - Balancing arbitragable tracking securities
5. 7680725 - Arbitrage of tracking securities
6. 7249086 - Arbitrage of tracking securities