Average Co-Inventor Count = 3.83
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. Yachiyo Industry Co., Ltd. (3 from 122 patents)
3 patents:
1. 8393380 - Roll-up shade apparatus for a vehicle
2. 8281847 - Roll-up shade apparatus for vehicle
3. 8002341 - Roll sunshade device