Average Co-Inventor Count = 4.29
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. (3 from 42,485 patents)
3 patents:
1. 8438874 - Natural gas liquefaction plant and motive power supply equipment for same
2. 7472542 - Gas-turbine power generating installation and method of operating the same
3. 7114322 - Gas-turbine power generating installation and method of operating the same