Average Co-Inventor Count = 4.00
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. Sharp Kabushiki Kaisha Corporation (3 from 25,543 patents)
3 patents:
1. 4509136 - Teller machine with preset abilities
2. 4458317 - Teller machine having an alterable secondary memory
3. 4262333 - Holding of a transaction identifying signal in a teller machine