Growing community of inventors

Saitama, Japan

Masao Yamaguchi

Average Co-Inventor Count = 1.85

ph-index = 17

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 = 1,378

Masao YamaguchiTakashi Shiraishi (32 patents)Masao YamaguchiYasuyuki Fukutome (18 patents)Masao YamaguchiKanji Kobayashi (9 patents)Masao YamaguchiMasahiro Sasaki (7 patents)Masao YamaguchiKen Omura (6 patents)Masao YamaguchiYasuyuki Fukuda (6 patents)Masao YamaguchiYasutoshi Fujita (5 patents)Masao YamaguchiShinya Yoshihara (5 patents)Masao YamaguchiNaruhito Yoshida (4 patents)Masao YamaguchiHiroshi Shindou (4 patents)Masao YamaguchiJun Kudo (4 patents)Masao YamaguchiYuichi Abe (3 patents)Masao YamaguchiAkio Ogawa (3 patents)Masao YamaguchiIsao Saito (3 patents)Masao YamaguchiHiroshi Takatori (3 patents)Masao YamaguchiTetsuo Abe (3 patents)Masao YamaguchiKazuya Orii (3 patents)Masao YamaguchiMasaki Kouzu (3 patents)Masao YamaguchiShingo Ohkawa (2 patents)Masao YamaguchiHiroyuki Kato (2 patents)Masao YamaguchiSunao Tabata (2 patents)Masao YamaguchiHaruhiko Ishida (2 patents)Masao YamaguchiTakahiro Fuchigami (2 patents)Masao YamaguchiToshio Kubota (2 patents)Masao YamaguchiTaketoshi Itoyama (2 patents)Masao YamaguchiTakashi Yamaguchi (2 patents)Masao YamaguchiKazuhiro Barada (2 patents)Masao YamaguchiMinobu Yamaguchi (2 patents)Masao YamaguchiAkiko Uematsu (2 patents)Masao YamaguchiToshimichi Sakurada (2 patents)Masao YamaguchiYasuo Yamaguchi (2 patents)Masao YamaguchiTakeshi Watanabe (1 patent)Masao YamaguchiKazuhiko Kikuchi (1 patent)Masao YamaguchiMinoru Yoshida (1 patent)Masao YamaguchiMasaru Nakamura (1 patent)Masao YamaguchiYasuyuki Suzuki (1 patent)Masao YamaguchiYutaka Yoshida (1 patent)Masao YamaguchiYoshiaki Ito (1 patent)Masao YamaguchiShunichi Wakamatsu (1 patent)Masao YamaguchiTadashi Murakami (1 patent)Masao YamaguchiHiroyuki Kukita (1 patent)Masao YamaguchiEiji Shiohama (1 patent)Masao YamaguchiKouji Hirano (1 patent)Masao YamaguchiRyoji Yokotani (1 patent)Masao YamaguchiKimiaki Furukawa (1 patent)Masao YamaguchiMasaki Kozu (1 patent)Masao YamaguchiFumio Kokubo (1 patent)Masao YamaguchiMasaru Sugimoto (1 patent)Masao YamaguchiNoboru Kanzo (1 patent)Masao YamaguchiShinji Kirihata (1 patent)Masao YamaguchiTakuma Hashimoto (1 patent)Masao YamaguchiHideyoshi Kimura (1 patent)Masao YamaguchiTetsuyuki Itakura (1 patent)Masao YamaguchiKoji Nishioka (1 patent)Masao YamaguchiAtsuyoshi Tsunoda (1 patent)Masao YamaguchiTakamitsu Kamimura (1 patent)Masao YamaguchiTomohiro Kaku (1 patent)Masao YamaguchiTakumi Takano (1 patent)Masao YamaguchiKatsuhiro Uchisawa (1 patent)Masao YamaguchiKazuo Orii (1 patent)Masao YamaguchiNaruhito Yashida (1 patent)Masao YamaguchiMunetosi Nagasaka (1 patent)Masao YamaguchiKimio Teramura (1 patent)Masao YamaguchiYusuke Ohashi (1 patent)Masao YamaguchiTakayuki Isikawa (1 patent)Masao YamaguchiMasao Yamaguchi (113 patents)Takashi ShiraishiTakashi Shiraishi (188 patents)Yasuyuki FukutomeYasuyuki Fukutome (19 patents)Kanji KobayashiKanji Kobayashi (10 patents)Masahiro SasakiMasahiro Sasaki (29 patents)Ken OmuraKen Omura (13 patents)Yasuyuki FukudaYasuyuki Fukuda (12 patents)Yasutoshi FujitaYasutoshi Fujita (18 patents)Shinya YoshiharaShinya Yoshihara (6 patents)Naruhito YoshidaNaruhito Yoshida (15 patents)Hiroshi ShindouHiroshi Shindou (6 patents)Jun KudoJun Kudo (4 patents)Yuichi AbeYuichi Abe (65 patents)Akio OgawaAkio Ogawa (38 patents)Isao SaitoIsao Saito (36 patents)Hiroshi TakatoriHiroshi Takatori (21 patents)Tetsuo AbeTetsuo Abe (7 patents)Kazuya OriiKazuya Orii (5 patents)Masaki KouzuMasaki Kouzu (3 patents)Shingo OhkawaShingo Ohkawa (82 patents)Hiroyuki KatoHiroyuki Kato (68 patents)Sunao TabataSunao Tabata (30 patents)Haruhiko IshidaHaruhiko Ishida (20 patents)Takahiro FuchigamiTakahiro Fuchigami (18 patents)Toshio KubotaToshio Kubota (9 patents)Taketoshi ItoyamaTaketoshi Itoyama (4 patents)Takashi YamaguchiTakashi Yamaguchi (4 patents)Kazuhiro BaradaKazuhiro Barada (2 patents)Minobu YamaguchiMinobu Yamaguchi (2 patents)Akiko UematsuAkiko Uematsu (2 patents)Toshimichi SakuradaToshimichi Sakurada (2 patents)Yasuo YamaguchiYasuo Yamaguchi (2 patents)Takeshi WatanabeTakeshi Watanabe (146 patents)Kazuhiko KikuchiKazuhiko Kikuchi (138 patents)Minoru YoshidaMinoru Yoshida (131 patents)Masaru NakamuraMasaru Nakamura (127 patents)Yasuyuki SuzukiYasuyuki Suzuki (105 patents)Yutaka YoshidaYutaka Yoshida (104 patents)Yoshiaki ItoYoshiaki Ito (81 patents)Shunichi WakamatsuShunichi Wakamatsu (38 patents)Tadashi MurakamiTadashi Murakami (24 patents)Hiroyuki KukitaHiroyuki Kukita (23 patents)Eiji ShiohamaEiji Shiohama (19 patents)Kouji HiranoKouji Hirano (13 patents)Ryoji YokotaniRyoji Yokotani (10 patents)Kimiaki FurukawaKimiaki Furukawa (10 patents)Masaki KozuMasaki Kozu (8 patents)Fumio KokuboFumio Kokubo (8 patents)Masaru SugimotoMasaru Sugimoto (7 patents)Noboru KanzoNoboru Kanzo (7 patents)Shinji KirihataShinji Kirihata (6 patents)Takuma HashimotoTakuma Hashimoto (6 patents)Hideyoshi KimuraHideyoshi Kimura (6 patents)Tetsuyuki ItakuraTetsuyuki Itakura (5 patents)Koji NishiokaKoji Nishioka (4 patents)Atsuyoshi TsunodaAtsuyoshi Tsunoda (3 patents)Takamitsu KamimuraTakamitsu Kamimura (2 patents)Tomohiro KakuTomohiro Kaku (1 patent)Takumi TakanoTakumi Takano (1 patent)Katsuhiro UchisawaKatsuhiro Uchisawa (1 patent)Kazuo OriiKazuo Orii (1 patent)Naruhito YashidaNaruhito Yashida (1 patent)Munetosi NagasakaMunetosi Nagasaka (1 patent)Kimio TeramuraKimio Teramura (1 patent)Yusuke OhashiYusuke Ohashi (1 patent)Takayuki IsikawaTakayuki Isikawa (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kabushiki Kaisha Toshiba (53 from 52,620 patents)

2. Toshiba Tec Kabushiki Kaisha (24 from 6,143 patents)

3. Tdk Corporation (17 from 7,909 patents)

4. Enplas Corporation (16 from 757 patents)

5. Tokyo Electron Limited (7 from 10,217 patents)

6. Other (5 from 832,398 patents)

7. Hirose Electric Company, Ltd. (5 from 770 patents)

8. Matsushita Electric Works, Ltd. (2 from 1,622 patents)

9. Corona International Corporation (2 from 2 patents)

10. Sharp Kabushiki Kaisha Corporation (1 from 25,481 patents)

11. Nihon Dempa Kogyo Co., Ltd. (1 from 629 patents)

12. Tokyo Electron Yamanashi Limited (1 from 71 patents)

13. Toshiba Tec Kabushiki (1 from 5 patents)


113 patents:

1. 12392150 - Booth

2. 11935511 - Acoustic output apparatus

3. 11914321 - Image forming apparatus with sound mitigation

4. RE47891 - Emission device, surface light source device, display and light flux control member

5. 10486926 - Apparatus for transporting paper sheet

6. 10108127 - Duplex printing image forming apparatus

7. 9752750 - Method of manufacturing light flux controlling member

8. 9671550 - Surface light source device and display apparatus using same

9. 9546773 - Surface light source apparatus

10. 9529183 - Surface light source device and display apparatus

11. 9435514 - Surface light source device and display device

12. 9405110 - Surface light source device and display apparatus

13. 9347643 - Light flux controlling apparatus

14. 9086517 - Light flux controlling member, light emitting apparatus, surface light source apparatus and display apparatus

15. 8596829 - Light flux controlling member, light emitting apparatus, surface light source apparatus and display apparatus

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10/27/2025
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