Average Co-Inventor Count = 3.00
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. Onkyo Kabushiki Kaisha (3 from 14 patents)
3 patents:
1. 4091891 - Horn speaker
2. 4040503 - Horn speaker
3. 3972385 - Horn speaker