Growing community of inventors

Hachioji, Japan

Keiji Okada

Average Co-Inventor Count = 1.33

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 = 559

Keiji Okada ↔ Yuichiro Hashimoto (1 patent)Keiji Okada ↔ Yoshitaka Naito (1 patent)Keiji Okada ↔ Takashi Yoneyama (1 patent)Keiji Okada ↔ Hirotoshi Amano (1 patent)Keiji Okada ↔ Katsushi Watanabe (1 patent)Keiji Okada ↔ Masaru Jinde (1 patent)Keiji OkadaKeiji Okada (8 patents)Yuichiro HashimotoYuichiro Hashimoto (105 patents)Yoshitaka NaitoYoshitaka Naito (42 patents)Takashi YoneyamaTakashi Yoneyama (38 patents)Hirotoshi AmanoHirotoshi Amano (23 patents)Katsushi WatanabeKatsushi Watanabe (21 patents)Masaru JindeMasaru Jinde (9 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Olympus Imaging Corporation (7 from 727 patents)

2. Olympus Corporation (1 from 8,194 patents)

3. Olympus Medical Systems Corporation (1 from 1,160 patents)


8 patents:

1. 8033993 - Endoscope device and display device

2. D595327 - Microscope

3. D589973 - Transitional image for a portion of a display screen of a digital camera

4. D588605 - Transitional image for a portion of a display screen of a digital camera

5. D588151 - Transitional image for a portion of a display screen of a digital camera

6. D588152 - Transitional image for a portion of a display screen of a digital camera

7. D588153 - Transitional image for a portion of a display screen of a digital camera

8. D553658 - Digital camera

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as of
1/6/2026
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