Average Co-Inventor Count = 4.48
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. Shibuya Kogyo Co., Ltd. (3 from 134 patents)
2. Shibuya Corporation (2 from 43 patents)
5 patents:
1. 11993501 - Filling method
2. 11008204 - Filling valve and liquid filling method
3. 7464732 - Filling valve
4. 7287562 - Filling valve
5. 6601618 - Filling apparatus and filling method therefor