Average Co-Inventor Count = 1.30
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. Kyowa Sangyo Co., Ltd. (5 from 42 patents)
2. Shinwa Seiko Co., Ltd. (3 from 15 patents)
5 patents:
1. 8333422 - Sun visor for vehicles
2. 7527317 - Sunvisor for vehicle
3. 7258470 - Vehicle sun visors having lighting devices
4. 7222914 - Surface covering materials of vehicle sun visors and vehicle sun visors having the surface covering materials
5. 7131682 - Vehicle sun visors having mirrors