Average Co-Inventor Count = 3.75
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. Okamura Corporation (2 from 421 patents)
2 patents:
1. 10334953 - Furniture, load support member for chair, and chair
2. 8794701 - Backrest for chair