Growing community of inventors

Hachioji, Japan

Keiji Handa

Average Co-Inventor Count = 4.12

ph-index = 5

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 = 173

Keiji HandaDaisuke Asada (4 patents)Keiji HandaHitoshi Karasawa (3 patents)Keiji HandaMasato Toda (2 patents)Keiji HandaMasanobu Koitabashi (2 patents)Keiji HandaTakeaki Nakamura (1 patent)Keiji HandaToshiaki Noguchi (1 patent)Keiji HandaShinya Masuda (1 patent)Keiji HandaHiroshi Ishiwata (1 patent)Keiji HandaKenji Harano (1 patent)Keiji HandaHiroyuki Nishida (1 patent)Keiji HandaToshiaki Nishikori (1 patent)Keiji HandaKeiji Shioda (1 patent)Keiji HandaSho Nakajima (1 patent)Keiji HandaYoshihiro Okada (1 patent)Keiji HandaTakakazu Kuki (1 patent)Keiji HandaKazufumi Takamizawa (1 patent)Keiji HandaTsuguhisa Sasai (1 patent)Keiji HandaKeisuke Miura (1 patent)Keiji HandaMasanori Yajima (1 patent)Keiji HandaNobuyuki Furukawa (1 patent)Keiji HandaIsamu Karasawa (1 patent)Keiji HandaYasuhiko Suetomi (1 patent)Keiji HandaAkihiro Amemiya (1 patent)Keiji HandaYuusuke Kimura (1 patent)Keiji HandaKeiji Handa (8 patents)Daisuke AsadaDaisuke Asada (11 patents)Hitoshi KarasawaHitoshi Karasawa (38 patents)Masato TodaMasato Toda (38 patents)Masanobu KoitabashiMasanobu Koitabashi (16 patents)Takeaki NakamuraTakeaki Nakamura (76 patents)Toshiaki NoguchiToshiaki Noguchi (26 patents)Shinya MasudaShinya Masuda (21 patents)Hiroshi IshiwataHiroshi Ishiwata (21 patents)Kenji HaranoKenji Harano (19 patents)Hiroyuki NishidaHiroyuki Nishida (15 patents)Toshiaki NishikoriToshiaki Nishikori (14 patents)Keiji ShiodaKeiji Shioda (14 patents)Sho NakajimaSho Nakajima (11 patents)Yoshihiro OkadaYoshihiro Okada (11 patents)Takakazu KukiTakakazu Kuki (7 patents)Kazufumi TakamizawaKazufumi Takamizawa (7 patents)Tsuguhisa SasaiTsuguhisa Sasai (7 patents)Keisuke MiuraKeisuke Miura (6 patents)Masanori YajimaMasanori Yajima (5 patents)Nobuyuki FurukawaNobuyuki Furukawa (3 patents)Isamu KarasawaIsamu Karasawa (3 patents)Yasuhiko SuetomiYasuhiko Suetomi (2 patents)Akihiro AmemiyaAkihiro Amemiya (1 patent)Yuusuke KimuraYuusuke Kimura (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Olympus Medical Systems Corporation (4 from 1,157 patents)

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

3. Olympus Optical Company, Ltd. (2 from 5,729 patents)

4. Konica Minolta, Inc. (1 from 4,236 patents)


8 patents:

1. 10821724 - Inkjet recording device and inkjet head driving method

2. 8317814 - Medical device and process of installing medical device in patient

3. 8267854 - Endoscope system

4. 8259167 - Scattering medium internal observation apparatus, image pickup system, image pickup method and endoscope apparatus

5. 8182414 - Endoscope system having retaining instrument

6. 6693397 - Light source device

7. 5526249 - Light source device

8. 5335154 - Optical axis adjustment mechanism for a light source

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12/28/2025
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