Average Co-Inventor Count = 4.80
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. Honda Giken Kogyo Kabushiki Kaisha (2 from 10,092 patents)
2. Pioneer Electronic Corporation (2 from 2,861 patents)
2 patents:
1. 4056165 - Sound reproducing apparatus in the inside of a car
2. 4005761 - Car loud speaker