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. Daio Paper Corporation (1 from 387 patents)
2. Nishikawa Rubber Co., Ltd. (1 from 231 patents)
1 patent:
1. 11046831 - Sound-insulating sponge material, vehicle sealing material, and weather strip