Average Co-Inventor Count = 2.57
ph-index = 3
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. Prince Industrial Development Co., Ltd. (2 from 10 patents)
2. Dainihon Jochugiku Co., Ltd. (1 from 21 patents)
3. Koizumi Sangyo Co., Ltd. (1 from 1 patent)
3 patents:
1. 4995171 - Gas combustion type dryer
2. 4693868 - Thermal fumigator for drugs
3. 4502465 - Catalyst combustion curling device