Average Co-Inventor Count = 4.41
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. Ckd Corporation (5 from 317 patents)
5 patents:
1. D672013 - Open/close valve
2. D672014 - Open/close valve
3. D671621 - Open/close valve
4. D671194 - Open/close valve
5. 8033579 - Fluid device connecting structure