Average Co-Inventor Count = 1.71
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. Toppan Printing Co., Ltd. (2 from 1,268 patents)
2. Nisca Corporation (2 from 489 patents)
3. Canon Finetech Nisca Inc. (244 patents)
2 patents:
1. 9169861 - Cassette attachment device and cassette
2. 8810619 - Printer