Average Co-Inventor Count = 3.00
ph-index = 4
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. Yoshino Kogyosho Co., Ltd. (4 from 665 patents)
4 patents:
1. 5474215 - Liquid jet blower
2. 5392959 - Suckback drain valve for a liquid jet blower
3. 5328062 - Liquid jet blower
4. 5240153 - Liquid jet blower