Average Co-Inventor Count = 2.57
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. Charles Schwab Co., Inc. (3 from 181 patents)
3 patents:
1. 9515978 - System and method for verified delivery of e-mail messages
2. 8484294 - System and method for verified delivery of e-mail messages
3. 7136898 - System and method for enhanced effectiveness of non-requested information in messages