Average Co-Inventor Count = 1.95
ph-index = 7
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. (31 from 72 patents)
2. Shachihata Industrial Co., Ltd. (3 from 25 patents)
34 patents:
1. D1073794 - Marking pen
2. D1030860 - Stamp
3. D950614 - Laser beam machine
4. D900210 - Stamp
5. D899512 - Stamp
6. D896882 - Stamp
7. D853475 - Stamp
8. D802654 - Stamp
9. D802655 - Stamp
10. D802656 - Stamp
11. D749165 - Numbering mechanism
12. D746345 - Stamp molding machine
13. D620971 - Stamp
14. D620972 - Stamp
15. D607489 - Stamp