Growing community of inventors

Tokyo, Japan

Tadashi Oota

Average Co-Inventor Count = 2.00

ph-index = 2

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 = 19

Tadashi OotaMasahiro Sawada (1 patent)Tadashi OotaKoichiro Kawamura (1 patent)Tadashi OotaTadashi Oota (2 patents)Masahiro SawadaMasahiro Sawada (6 patents)Koichiro KawamuraKoichiro Kawamura (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Nippon Kogaku K.k. (2 from 849 patents)


2 patents:

1. 4575771 - Apparatus for superimposing and reproducing still picture signals

2. 4532558 - Picture recording apparatus

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as of
1/20/2026
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