Average Co-Inventor Count = 6.00
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. Stc, Inc (4 from 232 patents)
4 patents:
1. 12162524 - Mass transit safety notification system and device
2. 11827257 - Mass transit safety notification system and device
3. 10029716 - Mass transit safety notification system and device
4. 9542852 - Mass transit safety notification system and device