Growing community of inventors

Yokohama, Japan

Keiichi Oyama

Average Co-Inventor Count = 2.51

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 = 61

Keiichi OyamaMakoto Matsuzawa (4 patents)Keiichi OyamaMasaaki Fujisawa (4 patents)Keiichi OyamaMasaaki Kojima (2 patents)Keiichi OyamaNaoko Tsuchiya (2 patents)Keiichi OyamaToshie Narita (2 patents)Keiichi OyamaMisako Tsuji (2 patents)Keiichi OyamaAki Goto (2 patents)Keiichi OyamaAzusa Yamaguchi (2 patents)Keiichi OyamaHisanori Kachi (1 patent)Keiichi OyamaKazuhito Uchida (1 patent)Keiichi OyamaYuji Uzuhashi (1 patent)Keiichi OyamaYukiko Oi (1 patent)Keiichi OyamaJin Fujino (1 patent)Keiichi OyamaAki Gotou (1 patent)Keiichi OyamaKeiko Tanaka (1 patent)Keiichi OyamaJunichi Itou (1 patent)Keiichi OyamaKoji Tsuchikawa (1 patent)Keiichi OyamaTakehiko Sakai (1 patent)Keiichi OyamaMinaho Ookubo (1 patent)Keiichi OyamaKeiichi Oyama (12 patents)Makoto MatsuzawaMakoto Matsuzawa (6 patents)Masaaki FujisawaMasaaki Fujisawa (5 patents)Masaaki KojimaMasaaki Kojima (3 patents)Naoko TsuchiyaNaoko Tsuchiya (2 patents)Toshie NaritaToshie Narita (2 patents)Misako TsujiMisako Tsuji (2 patents)Aki GotoAki Goto (2 patents)Azusa YamaguchiAzusa Yamaguchi (2 patents)Hisanori KachiHisanori Kachi (6 patents)Kazuhito UchidaKazuhito Uchida (5 patents)Yuji UzuhashiYuji Uzuhashi (4 patents)Yukiko OiYukiko Oi (3 patents)Jin FujinoJin Fujino (2 patents)Aki GotouAki Gotou (2 patents)Keiko TanakaKeiko Tanaka (1 patent)Junichi ItouJunichi Itou (1 patent)Koji TsuchikawaKoji Tsuchikawa (1 patent)Takehiko SakaiTakehiko Sakai (1 patent)Minaho OokuboMinaho Ookubo (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. The Nisshin Oillio Group, Ltd. (10 from 85 patents)

2. The Nisshin Oil Mills, Ltd. (2 from 70 patents)


12 patents:

1. 9125839 - Composition for external use on skin, cosmetic, and cleaning agent

2. 9078819 - Cosmetic transparent gel preparation and gelling agent

3. 9028848 - Composition for cosmetics, cosmetic, method for producing oil-in-water emulsion cosmetic, and two separate layer-type cosmetic

4. 9028850 - Composition for cosmetics, cosmetic, method for producing oil-in-water emulsion cosmetic, and two separate layer-type cosmetic

5. 8765718 - Cosmetic preparation comprising silicone

6. 8597669 - Cosmetic transparent gel preparation and gelling agent

7. 8501210 - Gel composition and pack cosmetic using the same

8. 8501209 - Gel-type water absorbent

9. 7763237 - Ultraviolet protective preparation and cosmetics containing the same

10. 7687066 - Self emulsifying oily liquid cosmetic

11. 6416771 - Moisturizing composition, base containing the same, and cosmetic or external preparation containing the moisturizing composition

12. 6117434 - Humectant composition, base containing the same, and cosmetic material

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as of
12/18/2025
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