Average Co-Inventor Count = 2.57
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. Kyocera Corporation (2 from 6,652 patents)
2. Kyoto Ceramic Co., Ltd. (1 from 21 patents)
3 patents:
1. 4841278 - Self-illuminant delineator and delineator system by use thereof
2. 4582953 - Solar cell module
3. 4486820 - Lighting equipment with a solar cell