Ryouhei OKA

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Yokohama-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Non-aqueous ink composition, inkjet recording method, and method fo...
- Patent number 12,104,068
- Issue date Oct 1, 2024
- DNP Fine Chemicals Co., Ltd.
- Ryouhei Oka
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Patents Applicationslast 30 patents

Information Patent Application
MAINTENANCE FLUID, METHOD FOR PRODUCING MAINTENANCE FLUID, METHOD F...
- Publication number 20250019553
- Publication date Jan 16, 2025
- DNP FINE CHEMICALS CO., LTD.
- Shinichi YOSHIMITSU
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
NONAQUEOUS INK COMPOSITION, AND RECORDING METHOD AND RECORDED MATTE...
- Publication number 20230365826
- Publication date Nov 16, 2023
- DNP FINE CHEMICALS CO., LTD.
- Keishiro YOSHIMORI
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
NON-AQUEOUS INK COMPOSITION, INKJET RECORDING METHOD, AND METHOD FO...
- Publication number 20230111531
- Publication date Apr 13, 2023
- DNP FINE CHEMICALS CO., LTD.
- Ryouhei OKA
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...