Average Co-Inventor Count = 12.00
ph-index = 1
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 (1 from 150 patents)
2. Teijin Chemicals Limited (1 from 127 patents)
3. Tachikawa Corporation (1 from 21 patents)
1 patent:
1. 4978181 - Sunshade