Average Co-Inventor Count = 2.40
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. Ebara Corporation (2 from 2,514 patents)
2. Agency of Industrial Science and Technology (1 from 1,430 patents)
2 patents:
1. 6005183 - Device containing solar cell panel and storage battery
2. 4797566 - Energy storing apparatus