Average Co-Inventor Count = 3.43
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. Kao Corporation (4 from 3,600 patents)
4 patents:
1. 11045386 - Steam heating mask
2. 10744030 - Heating implement
3. 9671134 - Vapor heating implement
4. 8945072 - Heat generating device