Average Co-Inventor Count = 6.35
ph-index = 2
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. Mitsui Engineering and Shipbuilding Company Limited (3 from 244 patents)
3 patents:
1. 8420018 - Gas hydrate production apparatus
2. 8309031 - Gas hydrate production apparatus
3. 8043579 - Gas hydrate production apparatus and dewatering unit