Average Co-Inventor Count = 3.43
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. Kabushiki Kaisha Toshiba (1 from 52,730 patents)
2. Graphtec Corporation (1 from 32 patents)
2 patents:
1. 6691044 - Product environmental load evaluation method
2. 5701816 - Heat-sensitive type mimeographic screen forming apparatus