Average Co-Inventor Count = 1.14
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. Kumahira Safe Co., Inc. (3 from 10 patents)
2. Kumihara Safe Co., Inc. (1 from 1 patent)
4 patents:
1. 4622456 - After hour depository
2. 4573416 - After hour depository
3. 4489662 - After hour depository
4. 4466357 - After hour depository