Growing community of inventors

Nagoya, Japan

Keiko Nii

Average Co-Inventor Count = 4.00

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 = 44

Keiko Nii ↔ Masanori Suda (2 patents)Keiko Nii ↔ Taku Hirano (2 patents)Keiko Nii ↔ Keisuke Hatta (2 patents)Keiko NiiKeiko Nii (2 patents)Masanori SudaMasanori Suda (6 patents)Taku HiranoTaku Hirano (3 patents)Keisuke HattaKeisuke Hatta (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ngk Spark Plug Company, Limited (2 from 2,606 patents)


2 patents:

1. D861874 - Medical oxygen concentrator

2. D854161 - Medical oxygen concentrator

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idiyas.com
as of
12/9/2025
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