Average Co-Inventor Count = 3.00
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. Hitachi, Ltd. (4 from 42,508 patents)
4 patents:
1. 6986256 - Gas turbine having a cooling air system and a spray air system
2. 6769259 - Gas turbine having a cooling air system and a spray air system
3. 6530229 - Gas turbine having a cooling air system and a spray air system
4. 6393826 - Gas turbine