Average Co-Inventor Count = 2.35
ph-index = 3
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. Toyo Roki Seizo Kabushiki Kaisha (4 from 41 patents)
4 patents:
1. 7879124 - Air cleaner and method of manufacturing the same
2. 7780770 - Air cleaner
3. 7699912 - Air-cleaner
4. 7473306 - Air cleaner