Growing community of inventors

Tokyo, Japan

Takumi Matsuda

Average Co-Inventor Count = 1.56

ph-index = 5

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 = 750

Takumi MatsudaMinoru Ikeda (3 patents)Takumi MatsudaKeiichi Yoshizawa (1 patent)Takumi MatsudaHirofumi Nagano (32 patents)Takumi MatsudaTakashi Yamamoto (3 patents)Takumi MatsudaMasahiro Yamamoto (3 patents)Takumi MatsudaMachiko Shimizu (3 patents)Takumi MatsudaShigetaka Kimura (2 patents)Takumi MatsudaNobuhiro Tanaka (1 patent)Takumi MatsudaSeiichi Sekiguchi (1 patent)Takumi MatsudaMasayuki Oyamatsu (4 patents)Takumi MatsudaYukari Hoshino (1 patent)Takumi MatsudaTatsuya Nakazawa (1 patent)Takumi MatsudaShigeru Kohata (1 patent)Takumi MatsudaTakahiro Izukawa (1 patent)Takumi MatsudaYing Zhong (1 patent)Takumi MatsudaTakuya Akashi (0 patent)Takumi MatsudaNaofumi Tomita (0 patent)Takumi MatsudaTakumi Matsuda (13 patents)Minoru IkedaMinoru Ikeda (61 patents)Keiichi YoshizawaKeiichi Yoshizawa (35 patents)Hirofumi NaganoHirofumi Nagano (32 patents)Takashi YamamotoTakashi Yamamoto (32 patents)Masahiro YamamotoMasahiro Yamamoto (19 patents)Machiko ShimizuMachiko Shimizu (5 patents)Shigetaka KimuraShigetaka Kimura (5 patents)Nobuhiro TanakaNobuhiro Tanaka (14 patents)Seiichi SekiguchiSeiichi Sekiguchi (11 patents)Masayuki OyamatsuMasayuki Oyamatsu (4 patents)Yukari HoshinoYukari Hoshino (3 patents)Tatsuya NakazawaTatsuya Nakazawa (3 patents)Shigeru KohataShigeru Kohata (3 patents)Takahiro IzukawaTakahiro Izukawa (2 patents)Ying ZhongYing Zhong (1 patent)Takuya AkashiTakuya Akashi (0 patent)Naofumi TomitaNaofumi Tomita (0 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Seikosha Co., Ltd. (10 from 696 patents)

2. Hitachi, Ltd. (3 from 42,508 patents)


13 patents:

1. D584703 - Television receiver

2. D566068 - Television receiver

3. D563916 - Television receiver

4. 5457664 - Energy saving timepiece

5. D357884 - Clock movement

6. D357885 - Clock movement

7. D333998 - Clock movement

8. D326427 - Clock movement

9. 5113796 - Feeder

10. D326064 - Clock movement

11. 5062382 - Feeder

12. 5037018 - Automatic feeder

13. 4821257 - Electricity supply structure for a piezoelectric vibrator

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as of
1/5/2026
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