Average Co-Inventor Count = 5.00
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. Sumitomo Chemical Company, Limited (1 from 6,900 patents)
2. Nippon Shokubai Kagaku Kogyo Co., Ltd. (1 from 236 patents)
1 patent:
1. 4954650 - Method for production of methacrylic acid