Average Co-Inventor Count = 2.00
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. Asahi Yukizai Kogyo Co., Ltd. (3 from 23 patents)
3 patents:
1. 5553831 - Ball valve
2. D372073 - Ball valve
3. 5174332 - Constant flow valve