Average Co-Inventor Count = 1.00
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. (6 from 120 patents)
6 patents:
1. D470881 - Swimming goggles
2. D465506 - Swimming goggles
3. D451530 - Swimming goggles
4. D437338 - Swimming goggles
5. D415780 - Swimming goggles
6. D377039 - Swimming goggles