Growing community of inventors

Miyagi, Japan

Takayasu Hirano

Average Co-Inventor Count = 3.55

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 = 28

Takayasu HiranoOsamu Koizumi (3 patents)Takayasu HiranoHiroshi Yoshioka (1 patent)Takayasu HiranoMinoru Takamizawa (1 patent)Takayasu HiranoHiroshi Ozaki (1 patent)Takayasu HiranoKengo Saito (1 patent)Takayasu HiranoKiyoshi Urayama (1 patent)Takayasu HiranoYoshiaki Hisagen (1 patent)Takayasu HiranoTakashi Ota (1 patent)Takayasu HiranoToshikazu Konno (1 patent)Takayasu HiranoTaizo Aizawa (1 patent)Takayasu HiranoTaizo Fukuda (1 patent)Takayasu HiranoSeiji Nihei (1 patent)Takayasu HiranoTakayasu Hirano (4 patents)Osamu KoizumiOsamu Koizumi (24 patents)Hiroshi YoshiokaHiroshi Yoshioka (99 patents)Minoru TakamizawaMinoru Takamizawa (79 patents)Hiroshi OzakiHiroshi Ozaki (63 patents)Kengo SaitoKengo Saito (14 patents)Kiyoshi UrayamaKiyoshi Urayama (13 patents)Yoshiaki HisagenYoshiaki Hisagen (10 patents)Takashi OtaTakashi Ota (8 patents)Toshikazu KonnoToshikazu Konno (7 patents)Taizo AizawaTaizo Aizawa (6 patents)Taizo FukudaTaizo Fukuda (5 patents)Seiji NiheiSeiji Nihei (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sony Corporation (4 from 58,130 patents)


4 patents:

1. 5860523 - Tape cassette receiving housing

2. 5474249 - Method for producing tape leaders for hubs

3. 5239436 - Tape cartridge with increased tape capacity

4. 4131717 - Magnetic recording medium

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as of
12/17/2025
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