Average Co-Inventor Count = 3.00
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. Copyer Co., Ltd. (3 from 41 patents)
2. Canon Finetech Inc. (1 from 203 patents)
4 patents:
1. 6807888 - Recording material cutting device
2. 6471344 - Ink supply device and ink filling method
3. 6460983 - Ink supply device and ink filling method
4. 6409322 - Ink supply apparatus and ink filling method