Average Co-Inventor Count = 3.43
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. Sumitomo Seika Chemicals Co., Ltd. (2 from 301 patents)
2 patents:
1. 8540904 - Composition for ultraviolet absorbent substance and ultraviolet absorbent substance comprising same
2. 7829730 - Process for production of methylene disulfonate compound