Growing community of inventors

Urawa, Japan

Tutomu Kaibara

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 = 1

Tutomu Kaibara ↔ Seiji Ishikawa (1 patent)Tutomu Kaibara ↔ Yukio Matsumoto (1 patent)Tutomu Kaibara ↔ Shuuichi Hirano (1 patent)Tutomu Kaibara ↔ Takuo Morishige (1 patent)Tutomu Kaibara ↔ Kenji Sugiyama (1 patent)Tutomu KaibaraTutomu Kaibara (1 patent)Seiji IshikawaSeiji Ishikawa (10 patents)Yukio MatsumotoYukio Matsumoto (3 patents)Shuuichi HiranoShuuichi Hirano (1 patent)Takuo MorishigeTakuo Morishige (1 patent)Kenji SugiyamaKenji Sugiyama (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ube Industries, Inc. (1 from 1,432 patents)

2. Seibu Oil Co., Ltd. (1 from 2 patents)


1 patent:

1. 4759839 - Process for producing pitch useful as raw material for carbon fibers

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as of
12/11/2025
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