Average Co-Inventor Count = 5.00
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. Ricoh Company, Ltd. (2 from 28,577 patents)
2 patents:
1. 5618935 - Tricyclic pyrazine compound and electrophotographic photoconductor
2. 5460909 - Pyrazine compound and electrophotographic photoconductor comprising the