Average Co-Inventor Count = 3.00
ph-index = 1
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 Holdings Company, Ltd. (3 from 450 patents)
2. Citizen Electronics Co., Ltd. (1 from 608 patents)
3 patents:
1. 8618573 - Layered substrate, light-emitting diode including the layered substrate and lighting device using the light-emitting diode
2. 8367000 - Cassette and measuring apparatus
3. 7583382 - Optical measurement apparatus