Average Co-Inventor Count = 2.50
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. Fujitsu Ten Limited (5 from 902 patents)
6 patents:
1. D1107008 - Loudspeaker
2. D736743 - Loudspeaker with amplifier
3. D514088 - Loudspeaker
4. D498225 - Amplifier
5. D497358 - Speaker
6. D491921 - Subwoofer