Average Co-Inventor Count = 6.00
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. Sanyo Chemical Industries, Ltd. (1 from 354 patents)
2. Takenaka Komuten Co., Ltd. (1 from 36 patents)
1 patent:
1. 4956403 - Suppression of pressure water absorption of lightweight aggregate by