Average Co-Inventor Count = 5.79
ph-index = 4
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 42,485 patents)
4 patents:
1. 5626821 - Cash transaction machine
2. 5563394 - Cash transaction machine and method
3. 5504313 - Cash transaction machine and method
4. 5374814 - Cash transaction machine and method with money disinfection