Average Co-Inventor Count = 5.33
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. Hitachi, Ltd. (2 from 42,496 patents)
2. Honda Motor Co., Ltd. (2 from 21,893 patents)
2 patents:
1. 7449997 - Auto light system
2. 7415338 - Apparatus for controlling auxiliary equipment of vehicle