Average Co-Inventor Count = 3.54
ph-index = 6
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. Canon Kabushiki Kaisha (8 from 90,872 patents)
8 patents:
1. 7455227 - System for card-based service access
2. 7191236 - Transparent telecommunications system and apparatus
3. 7159763 - Card reading device for service access
4. 7156302 - Card reading device for service access
5. 6910627 - Smart card systems and electronic ticketing methods
6. 6824045 - Method and system for using multiple smartcards in a reader
7. 6748421 - Method and system for conveying video messages
8. 6557768 - Method for self-programming smart cards