Growing community of inventors

Yokohama, Japan

Tatsuo Kojima

Average Co-Inventor Count = 1.29

ph-index = 8

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.

Forward Citations = 278

Tatsuo Kojima ↔ Takashi Yomo (3 patents)Tatsuo Kojima ↔ Hiroyuki Tokuda (2 patents)Tatsuo Kojima ↔ Masaaki Sakai (2 patents)Tatsuo KojimaTatsuo Kojima (14 patents)Takashi YomoTakashi Yomo (22 patents)Hiroyuki TokudaHiroyuki Tokuda (77 patents)Masaaki SakaiMasaaki Sakai (15 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Canon Kabushiki Kaisha (14 from 90,809 patents)


14 patents:

1. D325743 - Printing head for printer

2. D319818 - Information storage and retrieval unit

3. D317173 - Envelope supply tray for printer

4. D315360 - Printer for computer

5. D315361 - Printer for computer

6. D308221 - Laser beam printer

7. D307764 - Printer

8. D304951 - Microfilm reader printer

9. D302560 - Microfilm reader printer

10. D294033 - Reader printer for microfilm

11. D291321 - Microfilm scanner

12. D288330 - Microfilm reader

13. D288333 - Microfilm reader printer

14. D287730 - Laser beam printer

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as of
1/8/2026
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