Average Co-Inventor Count = 2.00
ph-index = 2
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. 11686640 - Mask adhesion determination device
2. 11471632 - Mask fitting level determination device
3. D827703 - Front frame for swimming goggles
4. D745081 - Swimming goggles
5. D745082 - Swimming goggles