Average Co-Inventor Count = 3.05
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. Motorola Corporation (4 from 20,290 patents)
4 patents:
1. 7509148 - Message alert system and method of providing message notification
2. 5903852 - Radiotelephone operating technique
3. 5594778 - Radio telephone operating technique
4. 4872196 - Telephone keypad input technique