Average Co-Inventor Count = 2.50
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. Kabushiki Kaisha Nichibei (2 from 12 patents)
2. Nichibei Co., Ltd. (1 from 10 patents)
3 patents:
1. 7377302 - Blind
2. 5865234 - Vertical blind
3. 5787951 - Roman shade