Growing community of inventors

Chiba, Japan

Hisashi Negoro

Average Co-Inventor Count = 3.95

ph-index = 1

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 = 4

Hisashi NegoroHideaki Tsutsumi (3 patents)Hisashi NegoroManabu Obata (2 patents)Hisashi NegoroYoichiro Mitsumoto (2 patents)Hisashi NegoroZensaku Mitsuji (2 patents)Hisashi NegoroMitsunori Matsumura (1 patent)Hisashi NegoroKeiji Jitsukawa (1 patent)Hisashi NegoroMorihiro Murata (1 patent)Hisashi NegoroTomoyasu Takaoka (1 patent)Hisashi NegoroShunsuke Nirei (1 patent)Hisashi NegoroYusuke Hirano (1 patent)Hisashi NegoroMitsuru Iba (1 patent)Hisashi NegoroHisashi Negoro (5 patents)Hideaki TsutsumiHideaki Tsutsumi (11 patents)Manabu ObataManabu Obata (26 patents)Yoichiro MitsumotoYoichiro Mitsumoto (9 patents)Zensaku MitsujiZensaku Mitsuji (3 patents)Mitsunori MatsumuraMitsunori Matsumura (12 patents)Keiji JitsukawaKeiji Jitsukawa (8 patents)Morihiro MurataMorihiro Murata (5 patents)Tomoyasu TakaokaTomoyasu Takaoka (5 patents)Shunsuke NireiShunsuke Nirei (3 patents)Yusuke HiranoYusuke Hirano (2 patents)Mitsuru IbaMitsuru Iba (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sony Corporation (5 from 58,129 patents)

2. Sony Optiarc Inc. (1 from 4 patents)


5 patents:

1. 8141109 - Disc drive apparatus and electronic apparatus

2. 7350220 - Disk drive unit

3. 7269834 - Disc type recording and/or reproducing apparatus

4. 7137129 - Disk drive apparatus

5. 7017167 - Disc recording and/or reproduction apparatus

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as of
12/7/2025
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