Growing community of inventors

Yokohama, Japan

Eiji Akiyama

Average Co-Inventor Count = 8.71

ph-index = 3

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 = 787

Eiji AkiyamaHideo Yokota (7 patents)Eiji AkiyamaToshio Yoshida (7 patents)Eiji AkiyamaKen Sawada (7 patents)Eiji AkiyamaHiroyuki Hoshino (7 patents)Eiji AkiyamaYuji Shimomura (7 patents)Eiji AkiyamaKazuo Tagawa (7 patents)Eiji AkiyamaKatsuya Takigawa (7 patents)Eiji AkiyamaSatoshi Suda (7 patents)Eiji AkiyamaShozaburo Konishi (7 patents)Eiji AkiyamaHajime Nakao (7 patents)Eiji AkiyamaMasahiro Hata (7 patents)Eiji AkiyamaJunichi Shibata (7 patents)Eiji AkiyamaShinichi Mitsumoto (7 patents)Eiji AkiyamaKenji Suzuki (1 patent)Eiji AkiyamaMasao Nambu (1 patent)Eiji AkiyamaJunichi Kubo (1 patent)Eiji AkiyamaNobuaki Kawabata (1 patent)Eiji AkiyamaMasao Isobe (1 patent)Eiji AkiyamaKozo Kamiya (1 patent)Eiji AkiyamaEiji Akiyama (9 patents)Hideo YokotaHideo Yokota (72 patents)Toshio YoshidaToshio Yoshida (48 patents)Ken SawadaKen Sawada (44 patents)Hiroyuki HoshinoHiroyuki Hoshino (34 patents)Yuji ShimomuraYuji Shimomura (32 patents)Kazuo TagawaKazuo Tagawa (29 patents)Katsuya TakigawaKatsuya Takigawa (26 patents)Satoshi SudaSatoshi Suda (24 patents)Shozaburo KonishiShozaburo Konishi (17 patents)Hajime NakaoHajime Nakao (12 patents)Masahiro HataMasahiro Hata (9 patents)Junichi ShibataJunichi Shibata (8 patents)Shinichi MitsumotoShinichi Mitsumoto (7 patents)Kenji SuzukiKenji Suzuki (133 patents)Masao NambuMasao Nambu (21 patents)Junichi KuboJunichi Kubo (11 patents)Nobuaki KawabataNobuaki Kawabata (8 patents)Masao IsobeMasao Isobe (5 patents)Kozo KamiyaKozo Kamiya (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Nippon Oil Corporation (7 from 188 patents)

2. Nippon Oil Company (1 from 690 patents)

3. Nippon Mitsubishi Oil Corporation (1 from 84 patents)

4. Petroleum Energy Center (1 from 58 patents)


9 patents:

1. 8299006 - Compressor oil composition

2. 8247360 - Heat treating oil composition

3. 8236740 - Lubricating oil composition

4. 8232233 - Lubricating oil composition for machine tools

5. 8227388 - Hydraulic oil composition

6. 8227387 - Metalworking oil composition

7. 8193129 - Refrigerator oil, compressor oil composition, hydraulic fluid composition, metalworking fluid composition, heat treatment oil composition, lubricant composition for machine tool and lubricant composition

8. 6159254 - Wax composition for forming candles

9. 4751335 - Process for preparing a fluid for traction drive

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as of
12/5/2025
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