Growing community of inventors

Tokyo, Japan

Yoshiaki Kumagai

Average Co-Inventor Count = 2.14

ph-index = 14

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 = 1,403

Yoshiaki KumagaiMasahiro Suzuki (206 patents)Yoshiaki KumagaiMakoto Niijima (6 patents)Yoshiaki KumagaiTakeshi Yamagishi (4 patents)Yoshiaki KumagaiTatsushi Nashida (3 patents)Yoshiaki KumagaiYoshihito Ishibashi (126 patents)Yoshiaki KumagaiDaisuke Shiono (4 patents)Yoshiaki KumagaiHiroshi Osawa (4 patents)Yoshiaki KumagaiKazuhiro Kato (4 patents)Yoshiaki KumagaiKozo Kawakita (4 patents)Yoshiaki KumagaiShuichi Kobayashi (4 patents)Yoshiaki KumagaiNaoya Sukeda (4 patents)Yoshiaki KumagaiMasaki Nagatsuka (4 patents)Yoshiaki KumagaiHajime Sorayama (4 patents)Yoshiaki KumagaiHiroaki Nakano (3 patents)Yoshiaki KumagaiRyuta Kanno (3 patents)Yoshiaki KumagaiJunichi Nagahara (3 patents)Yoshiaki KumagaiYumie Sonoda (3 patents)Yoshiaki KumagaiHiroyuki Hanaya (2 patents)Yoshiaki KumagaiYasuhide Hosoda (2 patents)Yoshiaki KumagaiTakashi Sogabe (1 patent)Yoshiaki KumagaiAkira Shirakura (1 patent)Yoshiaki KumagaiNoriaki Takagi (1 patent)Yoshiaki KumagaiDaisuke Yamazaki (52 patents)Yoshiaki KumagaiShigeru Tajima (46 patents)Yoshiaki KumagaiQi Zheng (2 patents)Yoshiaki KumagaiHirofumi Tamori (2 patents)Yoshiaki KumagaiMasato Kawasaki (2 patents)Yoshiaki KumagaiKoji Ashizaki (1 patent)Yoshiaki KumagaiShunichi Hashimoto (1 patent)Yoshiaki KumagaiYasuo Yuyama (1 patent)Yoshiaki KumagaiKazuyuki Takizawa (1 patent)Yoshiaki KumagaiMayu Irimajiri (1 patent)Yoshiaki KumagaiHidefumi Goto (1 patent)Yoshiaki KumagaiAkira Masutani (1 patent)Yoshiaki KumagaiShigenori Yoshida (1 patent)Yoshiaki KumagaiMaki Hirakawa (1 patent)Yoshiaki KumagaiTetsu Natsume (7 patents)Yoshiaki KumagaiShigeyuki Kazama (1 patent)Yoshiaki KumagaiHiroyuki Urushibata (1 patent)Yoshiaki KumagaiAya Furumura (1 patent)Yoshiaki KumagaiHidenori Ishikawa (1 patent)Yoshiaki KumagaiAkihiko Tsurishima (1 patent)Yoshiaki KumagaiYoshiaki Kumagai (37 patents)Masahiro SuzukiMasahiro Suzuki (206 patents)Makoto NiijimaMakoto Niijima (54 patents)Takeshi YamagishiTakeshi Yamagishi (57 patents)Tatsushi NashidaTatsushi Nashida (130 patents)Yoshihito IshibashiYoshihito Ishibashi (126 patents)Daisuke ShionoDaisuke Shiono (49 patents)Hiroshi OsawaHiroshi Osawa (49 patents)Kazuhiro KatoKazuhiro Kato (19 patents)Kozo KawakitaKozo Kawakita (16 patents)Shuichi KobayashiShuichi Kobayashi (7 patents)Naoya SukedaNaoya Sukeda (7 patents)Masaki NagatsukaMasaki Nagatsuka (7 patents)Hajime SorayamaHajime Sorayama (6 patents)Hiroaki NakanoHiroaki Nakano (113 patents)Ryuta KannoRyuta Kanno (33 patents)Junichi NagaharaJunichi Nagahara (26 patents)Yumie SonodaYumie Sonoda (14 patents)Hiroyuki HanayaHiroyuki Hanaya (68 patents)Yasuhide HosodaYasuhide Hosoda (53 patents)Takashi SogabeTakashi Sogabe (81 patents)Akira ShirakuraAkira Shirakura (68 patents)Noriaki TakagiNoriaki Takagi (68 patents)Daisuke YamazakiDaisuke Yamazaki (52 patents)Shigeru TajimaShigeru Tajima (46 patents)Qi ZhengQi Zheng (39 patents)Hirofumi TamoriHirofumi Tamori (24 patents)Masato KawasakiMasato Kawasaki (14 patents)Koji AshizakiKoji Ashizaki (43 patents)Shunichi HashimotoShunichi Hashimoto (40 patents)Yasuo YuyamaYasuo Yuyama (31 patents)Kazuyuki TakizawaKazuyuki Takizawa (23 patents)Mayu IrimajiriMayu Irimajiri (19 patents)Hidefumi GotoHidefumi Goto (13 patents)Akira MasutaniAkira Masutani (11 patents)Shigenori YoshidaShigenori Yoshida (9 patents)Maki HirakawaMaki Hirakawa (8 patents)Tetsu NatsumeTetsu Natsume (7 patents)Shigeyuki KazamaShigeyuki Kazama (7 patents)Hiroyuki UrushibataHiroyuki Urushibata (4 patents)Aya FurumuraAya Furumura (1 patent)Hidenori IshikawaHidenori Ishikawa (1 patent)Akihiko TsurishimaAkihiko Tsurishima (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sony Corporation (35 from 58,129 patents)

2. Sony Deutschland Gmbh (1 from 360 patents)

3. Sony Ericsson Mobile Communications Japan, Inc. (1 from 150 patents)

4. Sony Kabushiki Kaisha (1 from 27 patents)


37 patents:

1. D745517 - Head mountable display

2. D695738 - Head mountable display

3. D695739 - Head mountable display

4. D686269 - Projector

5. D675599 - Earphone

6. D665768 - Portable recorder

7. D665346 - Battery charger

8. D656489 - Earphone

9. D649955 - Portable recorder

10. D627769 - Mobile phone

11. D609691 - Combined disc player, clock and radio receiver

12. 7597457 - Lighting apparatus

13. D597520 - Combined disc player, clock and radio receiver

14. D597533 - Remote controller

15. D595688 - Combined disc player, clock and radio receiver

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12/7/2025
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