Average Co-Inventor Count = 3.00
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. Nisso Petrochemical Industries Co., Ltd. (1 from 4 patents)
2. Hoechst Japan Kabushiki Kaisha (1 from 1 patent)
1 patent:
1. 4729941 - Photoresist processing solution with quaternary ammonium hydroxide