Growing community of inventors

Kanagawa, Japan

Toru Hama

Average Co-Inventor Count = 3.64

ph-index = 3

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 = 21

Toru HamaTomohiro Watanabe (14 patents)Toru HamaKazuyuki Takizawa (12 patents)Toru HamaYoshiteru Taka (7 patents)Toru HamaTakayuki Ishibashi (7 patents)Toru HamaKiyoshi Goto (2 patents)Toru HamaNobuhiko Ando (1 patent)Toru HamaRyoji Takamatsu (1 patent)Toru HamaIkuo Nitta (1 patent)Toru HamaHisao Takahashi (1 patent)Toru HamaHiroshi Kishida (1 patent)Toru HamaToru Hama (16 patents)Tomohiro WatanabeTomohiro Watanabe (25 patents)Kazuyuki TakizawaKazuyuki Takizawa (23 patents)Yoshiteru TakaYoshiteru Taka (12 patents)Takayuki IshibashiTakayuki Ishibashi (8 patents)Kiyoshi GotoKiyoshi Goto (2 patents)Nobuhiko AndoNobuhiko Ando (45 patents)Ryoji TakamatsuRyoji Takamatsu (11 patents)Ikuo NittaIkuo Nitta (4 patents)Hisao TakahashiHisao Takahashi (2 patents)Hiroshi KishidaHiroshi Kishida (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sony Corporation (16 from 58,132 patents)

2. Fukoku Co., Ltd. (1 from 49 patents)


16 patents:

1. RE42763 - Recording and/or reproducing device for disks

2. RE42482 - Disc support plate, disc changer mechanism, and disc recording and/or reproducing device

3. RE42041 - Recording and/or reproducing device for disks

4. 7447136 - Optical pickup and optical disc apparatus

5. 7308695 - Disk holding member, disk tray, recording and/or reproducing device, and disk changer

6. 6934959 - Disk recording and/or reproducing device

7. 6785897 - Disc support plate, disc changer mechanism, and disc recording and/or reproducing device

8. 6760283 - Disk recording and/or reproducing device with starting and ejection control means

9. 6754164 - Disc recording/reproducing apparatus and disc container casing used therein

10. 6751181 - Recording and/or reproducing device for disks

11. 6724713 - Recording and/or reproducing device for disks

12. 6683828 - Disc holding device and disc recording and/or reproducing device including disc mounting mechanisms and bias mechanisms for biasing a disc towards the mounting mechanisms

13. 6654319 - Disc recording and/or reproducing apparatus having control plates and space forming features

14. 6646974 - Disc support plate and disc recording and/or reproducing device

15. 6493308 - Disc recording/reproducing apparatus and disc container casing used therein

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idiyas.com
as of
1/10/2026
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