Growing community of inventors

Kawasaki, Japan

Kei Obara

Average Co-Inventor Count = 4.36

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 = 1

Kei ObaraYoshiaki Shimooka (2 patents)Kei ObaraYoshiaki Sugizaki (1 patent)Kei ObaraHiroshi Matsumoto (1 patent)Kei ObaraKazuyuki Higashi (1 patent)Kei ObaraHirofumi Morita (1 patent)Kei ObaraYoshikuni Goshima (1 patent)Kei ObaraHitomi Yamaguchi (1 patent)Kei ObaraMiyoko Shimada (1 patent)Kei ObaraKei Obara (2 patents)Yoshiaki ShimookaYoshiaki Shimooka (25 patents)Yoshiaki SugizakiYoshiaki Sugizaki (209 patents)Hiroshi MatsumotoHiroshi Matsumoto (142 patents)Kazuyuki HigashiKazuyuki Higashi (66 patents)Hirofumi MoritaHirofumi Morita (31 patents)Yoshikuni GoshimaYoshikuni Goshima (8 patents)Hitomi YamaguchiHitomi Yamaguchi (4 patents)Miyoko ShimadaMiyoko Shimada (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kabushiki Kaisha Toshiba (1 from 52,711 patents)

2. Nuflare Technology, Inc. (1 from 716 patents)


2 patents:

1. 11721520 - Semiconductor device, multi-charged-particle beam writing apparatus, and multi-charged-particle beam exposure apparatus

2. 9181081 - Electrical component and method of manufacturing the same

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12/8/2025
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