Average Co-Inventor Count = 4.44
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. Kureha Kagaku Kogyo Kabushiki Kaisha (1 from 776 patents)
2. Director-general of Agency of Industrial Science and Technology (1 from 232 patents)
3. Kureha Chemical Industry Company, Limited (1 from 128 patents)
4. Sumitomo Corporation (1 from 22 patents)
2 patents:
1. 4299738 - Detergent composition
2. 4174224 - Sand mold composition