Average Co-Inventor Count = 4.29
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. Kajima Corporation (3 from 150 patents)
2. Research Institute of Innovative Technology for the Earth (1 from 44 patents)
3 patents:
1. 5464539 - Process for the production of hydrogen by microorganisms
2. 5350692 - Microorganisms useful for hydrogen gas production
3. 5350685 - Process for preparing hydrogen gas using microorganism