Average Co-Inventor Count = 6.46
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. Asahi Yukizai Kogyo Co., Ltd. (2 from 23 patents)
2. Bridgestone Corporation (1 from 5,119 patents)
2 patents:
1. 5177140 - Material for mold and process of forming mold by using this material
2. 5137931 - Foamable phenolic resin composition and process for preparation thereof