Chie Maruyama has been granted 6 US patents while listed as an inventor at Seiko Epson . The first was granted in 2012 and the most recent in May 2025. Chie Maruyama ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Chie Maruyama in Kanazawa, JP.
Patents per Year Patents granted per year, 2012 to 2025 Bar chart with a peak of 2 patents in 2015. peak 2 2012: 1 patents 2012 2013: 1 patents 2013 2015: 2 patents 2015 2016: 1 patents 2016 2025: 1 patents 2025
Issued Patents All Time
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Showing 1–6 of 6 patents
Patent # Title Co-Inventors Date
12304973 Polysaccharide derivative production method and lignin derivative production method Daisuke Hirose , Samuel Budi Wardhana Kusuma , Naoki Wada , Kenji Takahashi 2025-05-20
9303174 Black ink composition Minharu Kanaya 2016-04-05
9023140 Ink jet ink set and ink jet recording system Hiromi Iseki , Kiyohiko Takemoto , Tomohiro Aruga 2015-05-05
8960877 Black ink composition Miharu Kanaya 2015-02-24
8362107 Ink set and recording method using the same Miharu Kanaya , Daisuke Ishihara , Ayako Nishiki 2013-01-29
8133314 Ink composition, recording method using the same, and recorded matter Daisuke Ishihara , Miharu Kanaya , Masaru Kumagai 2012-03-13