Average Co-Inventor Count = 2.35
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. Citizen Electronics Co., Ltd. (4 from 608 patents)
2. Citizen Watch Company, Ltd. (3 from 2,003 patents)
3. Citizen Holdings Company, Ltd. (1 from 450 patents)
4 patents:
1. D902875 - Light emitting diode
2. D834542 - Light emitting diode
3. D796457 - Light emitting diode
4. D771579 - Light emitting diode