Average Co-Inventor Count = 1.41
ph-index = 8
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. (12 from 120 patents)
12 patents:
1. D633937 - Goggles
2. D620515 - Swimming goggles
3. D609735 - Eyeglasses
4. D609266 - Sunglasses
5. D605686 - Pair of eyeglasses
6. D603444 - Sunglasses
7. D593592 - Sunglasses
8. 7490934 - Eyewear end piece
9. D519146 - Sunglasses
10. 6460996 - Eyeglasses
11. D440594 - Eyeglass frame
12. D439599 - Sunglasses