Growing community of inventors

Tokyo, Japan

Sigeru Hasegawa

Average Co-Inventor Count = 4.12

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 = 83

Sigeru HasegawaHaruki Takita (7 patents)Sigeru HasegawaMasafumi Itoh (4 patents)Sigeru HasegawaMasafumi Ito (3 patents)Sigeru HasegawaMinoru Sube (3 patents)Sigeru HasegawaKouji Suzuki (2 patents)Sigeru HasegawaKouzi Suzuki (2 patents)Sigeru HasegawaJunko Suzuki (1 patent)Sigeru HasegawaSigeru Hasegawa (7 patents)Haruki TakitaHaruki Takita (76 patents)Masafumi ItohMasafumi Itoh (5 patents)Masafumi ItoMasafumi Ito (198 patents)Minoru SubeMinoru Sube (92 patents)Kouji SuzukiKouji Suzuki (2 patents)Kouzi SuzukiKouzi Suzuki (2 patents)Junko SuzukiJunko Suzuki (8 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Teac Corporation (7 from 1,030 patents)


7 patents:

1. D304941 - Compact disc player

2. D304829 - Combined compact disc player and tape recorder

3. D297932 - Video tape recorder

4. D288437 - Audio mixer

5. D287726 - Disc drive assembly

6. D273950 - Audio mixer

7. D273676 - Audio mixer

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as of
1/7/2026
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