Average Co-Inventor Count = 2.29
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. Institute of Technology Precision Electrical Discharge Work's (3 from 40 patents)
2. Hoden Seimitsu Kako Kenkyusho Co., Ltd. (1 from 21 patents)
4 patents:
1. 7574891 - Press
2. 6792788 - Pressurizer
3. 6679164 - Press machine
4. 6519831 - Progressive processing device