Average Co-Inventor Count = 1.33
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. United Technologies Corporation (2 from 10,654 patents)
2 patents:
1. 3991849 - Sound absorption with variable acoustic resistance means
2. 3972383 - Sound absorption with variable acoustic resistance means by oscillatory