Average Co-Inventor Count = 4.67
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. Dainippon Screen Mfg. Co., Ltd. (3 from 1,306 patents)
3 patents:
1. 5530468 - Apparatus for and of recording an image using a photosensitive drum for
2. 5089845 - Printing apparatus
3. 4679930 - One-way reducing and enlarging printer