Average Co-Inventor Count = 1.50
ph-index = 4
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. (7 from 120 patents)
7 patents:
1. 8959669 - Goggles
2. 8650667 - Swimming goggles
3. D629442 - Goggle body
4. 7526813 - Goggles
5. 7490365 - Swimming goggles
6. D565083 - Sunglasses
7. D504145 - Swimming goggles