Average Co-Inventor Count = 1.71
ph-index = 6
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. (10 from 120 patents)
10 patents:
1. 8959669 - Goggles
2. 8650667 - Swimming goggles
3. 8246165 - Eyeglasses
4. D663763 - Goggle front frame
5. D633937 - Goggles
6. D622756 - Sunglasses
7. D620515 - Swimming goggles
8. D620516 - Swimming goggles
9. D609266 - Sunglasses
10. D593592 - Sunglasses