Average Co-Inventor Count = 4.00
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. Star Micronics Company Limited (2 from 251 patents)
2 patents:
1. D401525 - Electronic sounder
2. D401179 - Audible signal for alarm units