Average Co-Inventor Count = 1.11
ph-index = 3
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. (5 from 120 patents)
5 patents:
1. D534200 - Swimming goggles
2. 6865753 - Goggles
3. 6845521 - Length adjusting mechanism of goggles
4. D466144 - Swimming goggles
5. D466145 - Swimming goggles