Growing community of inventors

Mobara, Japan

Iwao Umeki

Average Co-Inventor Count = 6.00

ph-index = 1

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 = 12

Iwao Umeki ↔ Tomokatsu Oguro (1 patent)Iwao Umeki ↔ Toshio Ogura (1 patent)Iwao Umeki ↔ Seiji Kitakaze (1 patent)Iwao Umeki ↔ Masumi Kuga (1 patent)Iwao Umeki ↔ Yuichi Ito (1 patent)Iwao UmekiIwao Umeki (1 patent)Tomokatsu OguroTomokatsu Oguro (21 patents)Toshio OguraToshio Ogura (9 patents)Seiji KitakazeSeiji Kitakaze (5 patents)Masumi KugaMasumi Kuga (5 patents)Yuichi ItoYuichi Ito (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi, Ltd. (1 from 42,517 patents)

2. Hitachi Device Engineering Co., Ltd. (1 from 217 patents)

3. Hitachi Electronic Devices Co., Ltd. (1 from 23 patents)


1 patent:

1. 5635797 - Magnetron with improved mode separation

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1/11/2026
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