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. Shachihata Inc. (6 from 72 patents)
6 patents:
1. 10832301 - System and method for stamp ordering and thermal carving
2. 10183480 - Seal surface carving apparatus
3. 10029396 - Seal carving apparatus and thermal carving machine
4. 9993972 - Seal carving apparatus and seal carving method
5. 9878491 - Seal carving apparatus and seal carving method
6. 9517648 - Porous stamp assembly, and manufacturing method and apparatus of the same