Growing community of inventors

Osaka, Japan

Keiji Yuyama

Average Co-Inventor Count = 1.38

ph-index = 7

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 = 152

Keiji YuyamaTakashi Tsukahara (5 patents)Keiji YuyamaIppei Ohashi (3 patents)Keiji YuyamaTakashi Koyama (1 patent)Keiji YuyamaSadayoshi Azuma (1 patent)Keiji YuyamaDaisuke Matsumoto (1 patent)Keiji YuyamaSo Suzuki (1 patent)Keiji YuyamaTaichi Yoshimura (1 patent)Keiji YuyamaToshihiro Nakashima (1 patent)Keiji YuyamaSo Suzuki (1 patent)Keiji YuyamaHiroshi Chino (1 patent)Keiji YuyamaTakanori Kawasaki (1 patent)Keiji YuyamaNoriyuki Mori (1 patent)Keiji YuyamaYasuyuki Hirouchi (1 patent)Keiji YuyamaKeiji Yuyama (19 patents)Takashi TsukaharaTakashi Tsukahara (26 patents)Ippei OhashiIppei Ohashi (13 patents)Takashi KoyamaTakashi Koyama (117 patents)Sadayoshi AzumaSadayoshi Azuma (35 patents)Daisuke MatsumotoDaisuke Matsumoto (25 patents)So SuzukiSo Suzuki (21 patents)Taichi YoshimuraTaichi Yoshimura (19 patents)Toshihiro NakashimaToshihiro Nakashima (19 patents)So SuzukiSo Suzuki (13 patents)Hiroshi ChinoHiroshi Chino (12 patents)Takanori KawasakiTakanori Kawasaki (8 patents)Noriyuki MoriNoriyuki Mori (5 patents)Yasuyuki HirouchiYasuyuki Hirouchi (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Panasonic Intellectual Property Management Co., Ltd. (11 from 13,247 patents)

2. Sanyo Electric Co., Ltd. (6 from 8,776 patents)

3. Panasonic Corporation (2 from 16,453 patents)


19 patents:

1. D944882 - Projector

2. D901576 - Projector

3. D870798 - Projector

4. D822752 - Projector

5. D803928 - Projector

6. D799579 - Projector

7. D775681 - Projector

8. D740877 - Projector

9. D730427 - Projector

10. D727998 - Projector

11. D727999 - Projector

12. D710331 - Remote controller for projector

13. D691188 - Projector

14. D688724 - Projector

15. 8267530 - Video projector

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idiyas.com
as of
12/8/2025
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