Average Co-Inventor Count = 2.00
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. Kotobuki Tsushou Co., Ltd. (1 from 7 patents)
2. Kotobuki Holdings Co., Ltd. (1 from 3 patents)
2 patents:
1. 11401175 - Water-purification cartridge and water purifier
2. 10626025 - Water-purification cartridge and water purifier