Average Co-Inventor Count = 1.64
ph-index = 1
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. Yamamoto Kogaku Co., Ltd. (3 from 120 patents)
3 patents:
1. 11262602 - Holding tool for wearable device and face or head-mounted implement provided with holding tool
2. D635177 - Swimming goggles
3. D623215 - Sunglasses