Growing community of inventors

Tokyo, Japan

Hiroyuki Shirai

Average Co-Inventor Count = 4.62

ph-index = 13

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 = 620

Hiroyuki ShiraiTadayuki Tsuda (14 patents)Hiroyuki ShiraiKazushi Watanabe (13 patents)Hiroyuki ShiraiIsao Ikemoto (10 patents)Hiroyuki ShiraiShinichi Sasaki (8 patents)Hiroyuki ShiraiToshiyuki Karakama (7 patents)Hiroyuki ShiraiYoshiya Nomura (7 patents)Hiroyuki ShiraiShinya Noda (4 patents)Hiroyuki ShiraiYoshikazu Sasago (4 patents)Hiroyuki ShiraiKazumi Sekine (4 patents)Hiroyuki ShiraiKazunori Kobayashi (4 patents)Hiroyuki ShiraiTakeo Shoji (4 patents)Hiroyuki ShiraiMakoto Tanaka (3 patents)Hiroyuki ShiraiKazuo Shishido (3 patents)Hiroyuki ShiraiTeruo Komatsu (3 patents)Hiroyuki ShiraiKazuhiko Ishiwata (3 patents)Hiroyuki ShiraiKanji Yano (3 patents)Hiroyuki ShiraiIkuo Ikemori (3 patents)Hiroyuki ShiraiToshio Inagi (2 patents)Hiroyuki ShiraiTakashi Sato (1 patent)Hiroyuki ShiraiAtsushi Numagami (1 patent)Hiroyuki ShiraiMasato Kobayashi (1 patent)Hiroyuki ShiraiMasaaki Ishibashi (1 patent)Hiroyuki ShiraiYasuo Shinoda (1 patent)Hiroyuki ShiraiTakeshi Nishino (1 patent)Hiroyuki ShiraiNorikazu Yamaguchi (1 patent)Hiroyuki ShiraiMasami Serizawa (1 patent)Hiroyuki ShiraiTatsuya Nakai (1 patent)Hiroyuki ShiraiToshiyuki Karkama (1 patent)Hiroyuki ShiraiKunihiko Tomiyasu (1 patent)Hiroyuki ShiraiHiroyuki Shirai (19 patents)Tadayuki TsudaTadayuki Tsuda (86 patents)Kazushi WatanabeKazushi Watanabe (114 patents)Isao IkemotoIsao Ikemoto (78 patents)Shinichi SasakiShinichi Sasaki (63 patents)Toshiyuki KarakamaToshiyuki Karakama (83 patents)Yoshiya NomuraYoshiya Nomura (41 patents)Shinya NodaShinya Noda (66 patents)Yoshikazu SasagoYoshikazu Sasago (37 patents)Kazumi SekineKazumi Sekine (33 patents)Kazunori KobayashiKazunori Kobayashi (26 patents)Takeo ShojiTakeo Shoji (25 patents)Makoto TanakaMakoto Tanaka (94 patents)Kazuo ShishidoKazuo Shishido (20 patents)Teruo KomatsuTeruo Komatsu (20 patents)Kazuhiko IshiwataKazuhiko Ishiwata (11 patents)Kanji YanoKanji Yano (10 patents)Ikuo IkemoriIkuo Ikemori (4 patents)Toshio InagiToshio Inagi (16 patents)Takashi SatoTakashi Sato (160 patents)Atsushi NumagamiAtsushi Numagami (103 patents)Masato KobayashiMasato Kobayashi (42 patents)Masaaki IshibashiMasaaki Ishibashi (24 patents)Yasuo ShinodaYasuo Shinoda (4 patents)Takeshi NishinoTakeshi Nishino (1 patent)Norikazu YamaguchiNorikazu Yamaguchi (1 patent)Masami SerizawaMasami Serizawa (1 patent)Tatsuya NakaiTatsuya Nakai (1 patent)Toshiyuki KarkamaToshiyuki Karkama (1 patent)Kunihiko TomiyasuKunihiko Tomiyasu (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Canon Kabushiki Kaisha (16 from 90,594 patents)

2. Kowa Company Limited (2 from 589 patents)

3. Hitachi, Ltd. (1 from 42,485 patents)


19 patents:

1. 9208960 - Electrode for vacuum circuit breaker, and vacuum interrupter using the electrode

2. 7553865 - Indomethacin external preparation

3. 6582720 - Medicinal compositions adhering to stomach/duodenum

4. 6118961 - Detachable two-frame process cartridge for an image forming apparatus

5. 6097911 - Process cartridge having shiftable cover with specific spacing between

6. 6075956 - Process cartridge having shiftable cover and guide member for directing

7. 5987278 - Process cartridge and image forming apparatus usable therewith

8. 5907749 - Process cartridge and image forming apparatus usable therewith

9. 5878304 - Process cartridge having shiftable cover with inner protrusion

10. 5828928 - Process cartridge mountable in an image forming system and a method for

11. 5682579 - Detachable two-frame process cartridge for an image forming apparatus

12. 5623328 - Process cartridge and image forming system on which process cartridge is

13. 5608509 - Process cartridge with blade member having a flat-surface side and an

14. 5470635 - Blade member having a flat-surface side and an angled-surface side

15. D355208 - Developing device for copying machine

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