Average Co-Inventor Count = 2.40
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. Emhart Industries, Inc. (1 from 595 patents)
2. Emhart Inc. (1 from 591 patents)
2 patents:
1. 4037206 - Ionization smoke detector and alarm system
2. 3934145 - Ionization smoke detector and alarm system