Average Co-Inventor Count = 6.43
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. Amtech Systems, Incorporated (14 from 77 patents)
14 patents:
1. 12505322 - Vehicle tracking system using smart-phone as active transponder
2. 12483870 - Vehicle tracking system using smart-phone as active transponder
3. 12437285 - Vehicle tracking system for congestion pricing using transponders
4. 12069552 - Vehicle tracking system using smart-phone as active transponder
5. 12056566 - Vehicle tracking system using transponders
6. 12015969 - Vehicle tracking system using smart-phone as active transponder
7. 11836569 - Vehicle tracking system using smart-phone as active transponder
8. 11663427 - Vehicle tracking system using transponders
9. 11341345 - Vehicle tracking system using transponders
10. 11323865 - Vehicle tracking system using smart-phone as active transponder
11. 11039284 - Vehicle tracking system using smart-phone as active transponder
12. 10769392 - Vehicle tracking system using transponders
13. 10708745 - Vehicle tracking system using smart-phone as active transponder
14. 10134210 - Vehicle tracking system using smart-phone as active transponder