Average Co-Inventor Count = 5.00
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. Kokusan Parts Industry Co., Ltd. (3 from 12 patents)
3 patents:
1. 6073938 - Sealing structure
2. 5938208 - Separate plate placed between adjacent valve bodies in a control valve
3. 5582415 - Metal gasket