Average Co-Inventor Count = 2.18
ph-index = 3
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. Izumi Denki Company Limited (3 from 5 patents)
2. Izumi Denki Corporation (1 from 16 patents)
4 patents:
1. 4276631 - Electronic timer
2. D248149 - Motor timer
3. D248092 - Motor timer
4. D248016 - Motor timer