Growing community of inventors

Tokyo, Japan

Hiroshi Hanzawa

Average Co-Inventor Count = 2.23

ph-index = 4

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 = 47

Hiroshi HanzawaYoshikazu Hara (3 patents)Hiroshi HanzawaMasakazu Miyata (3 patents)Hiroshi HanzawaHitoshi Watanabe (1 patent)Hiroshi HanzawaHiroyuki Sato (1 patent)Hiroshi HanzawaHideo Watanabe (1 patent)Hiroshi HanzawaHiroyuki Ikeda (1 patent)Hiroshi HanzawaYoshihiro Noguchi (1 patent)Hiroshi HanzawaToshiaki Asakura (1 patent)Hiroshi HanzawaToshiyuki Hoshi (1 patent)Hiroshi HanzawaKoji Nakayama (1 patent)Hiroshi HanzawaSusumu Oshio (1 patent)Hiroshi HanzawaHiroyuki Sunagawa (1 patent)Hiroshi HanzawaSatoshi Terashita (1 patent)Hiroshi HanzawaKen Kosaka (1 patent)Hiroshi HanzawaMakoto Hirohashi (1 patent)Hiroshi HanzawaTomonori Miura (1 patent)Hiroshi HanzawaHiroshi Hanzawa (9 patents)Yoshikazu HaraYoshikazu Hara (24 patents)Masakazu MiyataMasakazu Miyata (13 patents)Hitoshi WatanabeHitoshi Watanabe (109 patents)Hiroyuki SatoHiroyuki Sato (82 patents)Hideo WatanabeHideo Watanabe (81 patents)Hiroyuki IkedaHiroyuki Ikeda (26 patents)Yoshihiro NoguchiYoshihiro Noguchi (16 patents)Toshiaki AsakuraToshiaki Asakura (15 patents)Toshiyuki HoshiToshiyuki Hoshi (14 patents)Koji NakayamaKoji Nakayama (12 patents)Susumu OshioSusumu Oshio (10 patents)Hiroyuki SunagawaHiroyuki Sunagawa (6 patents)Satoshi TerashitaSatoshi Terashita (6 patents)Ken KosakaKen Kosaka (5 patents)Makoto HirohashiMakoto Hirohashi (1 patent)Tomonori MiuraTomonori Miura (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Riso Kagaku Corporation (6 from 1,074 patents)

2. Alps Alpine Co., Ltd. (2 from 556 patents)

3. Riso Kogaku Corporation (1 from 3 patents)


9 patents:

1. 11325546 - Rotary connector

2. 10289149 - Input operating apparatus

3. 6632034 - Printing machine for booklet-like medium

4. 6208438 - Reflection type image reader having an original positioning sheet

5. 5608496 - Print image position indication device

6. 5507225 - Stencil printer equipped with print image transverse position adjustment

7. 5506661 - Image forming apparatus

8. 5483878 - Mimeographic printing machine

9. 5419243 - Rotary stencil printer equipped with pinch roller position control means

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as of
12/6/2025
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