Average Co-Inventor Count = 3.33
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. Hitachi, Ltd. (4 from 42,508 patents)
2. American Express International Inc. (1 from 1 patent)
4 patents:
1. 5455406 - Automatic transaction apparatus
2. 4982071 - Information recording card and charge making/paying system employing the
3. 4947479 - Method of processing data in a banking terminal employing the
4. 4825051 - Method of processing the data in banking terminal