Growing community of inventors

Tokyo, Japan

Susumu Ikuma

Average Co-Inventor Count = 1.33

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 = 72

Susumu IkumaMakoto Shihoh (1 patent)Susumu IkumaTakeshi Setoriyama (1 patent)Susumu IkumaNobuhiro Tanaka (1 patent)Susumu IkumaYoji Tomoyuki (1 patent)Susumu IkumaHidenobu Suzuki (1 patent)Susumu IkumaSusumu Ikuma (7 patents)Makoto ShihohMakoto Shihoh (24 patents)Takeshi SetoriyamaTakeshi Setoriyama (18 patents)Nobuhiro TanakaNobuhiro Tanaka (14 patents)Yoji TomoyukiYoji Tomoyuki (12 patents)Hidenobu SuzukiHidenobu Suzuki (9 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Canon Kabushiki Kaisha (4 from 90,753 patents)

2. Seikosha Co., Ltd. (3 from 696 patents)


7 patents:

1. 6415118 - Image forming apparatus with inclined guide for sheet material

2. 5537376 - Disk cartridge loading mechanism

3. 5386406 - Cartridge shutter opening device

4. 5297116 - Optical information recording/reproduction apparatus which cools

5. D327449 - Clock movement

6. D326062 - Clock movement

7. 4821249 - Timepiece movement

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as of
1/3/2026
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