Growing community of inventors

Miyagi, Japan

Tadao Igarashi

Average Co-Inventor Count = 1.66

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 = 56

Tadao IgarashiTakashi Oogi (3 patents)Tadao IgarashiHaruyuki Karibe (2 patents)Tadao IgarashiShinichiro Kato (1 patent)Tadao IgarashiTakashi Ota (1 patent)Tadao IgarashiTeruo Chiba (1 patent)Tadao IgarashiTakeo Oba (1 patent)Tadao IgarashiTadao Igarashi (8 patents)Takashi OogiTakashi Oogi (8 patents)Haruyuki KaribeHaruyuki Karibe (6 patents)Shinichiro KatoShinichiro Kato (39 patents)Takashi OtaTakashi Ota (8 patents)Teruo ChibaTeruo Chiba (3 patents)Takeo ObaTakeo Oba (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sony Corporation (8 from 58,129 patents)


8 patents:

1. 5143217 - Tape-cartridge case with thin, single layer side wall for reading UPC

2. 4918558 - Magnetic tape cassette having reel locks controlled by an optical tape

3. 4896238 - Tape cassette with pressable cap for fixing reel on reel base

4. 4864448 - Tape cassette

5. 4791504 - Tape cassette with lid lock and tape characteristic indicating member

6. D293569 - Reel for a video tape cassette

7. D293570 - Reel for a video tape cassette

8. 4646188 - VTR tape cassette

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idiyas.com
as of
12/13/2025
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