Average Co-Inventor Count = 1.60
ph-index = 4
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. Armstrong World Industries, Inc. (3 from 448 patents)
2. Ion Systems, Inc. (1 from 41 patents)
4 patents:
1. D275317 - Combined air ionizer and cleaner
2. 4406108 - Method for installing a suspended ceiling
3. 4406104 - Suspended ceiling wall angle
4. 4335973 - Runner splicer bar