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Yasumasa Yokoyama

Canon: 5 patents #9,253 of 19,416Top 50%
Overall (All Time): #1,051,136 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
5946013 Ink jet head having a protective layer with a controlled argon content Suomi Kurihara, Hiroto Matsuda, Hirokazu Komuro, Isao Kimura 1999-08-31
4632703 Recording liquid Shoji Koike, Tsuyoshi Eida, Masatsune Kobayashi, Tomoko Komori 1986-12-30
4599112 Recording liquid Tomoko Komori, Tsuyoshi Eida, Shoji Koike, Masatsune Kobayashi 1986-07-08
4557761 Recording liquid Masatsune Kobayashi, Tsuyoshi Eida, Shoji Koike, Tomoko Komori 1985-12-10
4505749 Method of forming color images Kazue Kanekiyo, Masatsune Kobayashi, Tsuyoshi Eida, Tomoko Komori, Shoji Koike 1985-03-19