Average Co-Inventor Count = 1.00
ph-index = 2
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. (2 from 10 patents)
2 patents:
1. D345850 - Fire-resisting safe
2. D338316 - Fire-resisting safe