Average Co-Inventor Count = 4.00
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. Ricoh Company, Ltd. (1 from 28,544 patents)
2. Kyushu University (1 from 431 patents)
1 patent:
1. 11950503 - Organic material and photoelectric conversion element