Average Co-Inventor Count = 6.05
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. Hitachi Chemical Company, Ltd. (4 from 1,641 patents)
4 patents:
1. 5604063 - Composition for charge transport layer and electrophotographic member
2. 5534375 - Composition for forming charge transport layer and electrophotographic
3. 4954406 - Electrophotographic plate including an undercoating layer having a
4. 4734347 - Electrophotographic plate having a protective layer of a