Growing community of inventors

Tokyo, Japan

Keiko Hayashi

Average Co-Inventor Count = 1.97

ph-index = 4

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 = 36

Keiko HayashiKakuichi Shiomi (2 patents)Keiko HayashiShusaku Tsutsumi (1 patent)Keiko HayashiKazuyoshi Takenaka (1 patent)Keiko HayashiAkio Yamamoto (1 patent)Keiko HayashiShoichi Kagayama (1 patent)Keiko HayashiMasae Matsuoka (1 patent)Keiko HayashiKeiko Hayashi (4 patents)Kakuichi ShiomiKakuichi Shiomi (19 patents)Shusaku TsutsumiShusaku Tsutsumi (3 patents)Kazuyoshi TakenakaKazuyoshi Takenaka (1 patent)Akio YamamotoAkio Yamamoto (1 patent)Shoichi KagayamaShoichi Kagayama (1 patent)Masae MatsuokaMasae Matsuoka (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Other (1 from 832,912 patents)

2. Nec Corporation (1 from 35,756 patents)

3. Earth Chemical Co., Ltd. (1 from 29 patents)

4. Electronic Navigation Research Institute (1 from 7 patents)

5. Masami Hayashi (1 from 1 patent)

6. Hayashi; Keiko (1 from 1 patent)


4 patents:

1. 7091994 - Method, system, and computer program for displaying screen information

2. 6695227 - Aerosol spraying apparatus

3. 6573888 - Image control system controlling traffic of a mobile body, such as an aircraft

4. D273666 - Ornament for a finger nail

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as of
1/11/2026
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