Average Co-Inventor Count = 5.00
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. Daicel Corporation (2 from 640 patents)
2. The Japan Tobacco Salt Public Corporation (1 from 45 patents)
2 patents:
1. 4085760 - Tobacco filter
2. 4068670 - Smoking composition