Hiroyuki Tsurumoto

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Kawagoe, JP

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Patents Grantslast 30 patents

Information Patent Grant
Etching agent, etching method and etching agent preparation liquid
- Patent number 9,845,538
- Issue date Dec 19, 2017
- Wako Pure Chemical Industries, Ltd.
- Takahiro Yokomizo
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Macroazo compounds
- Patent number 6,172,171
- Issue date Jan 9, 2001
- Wako Pure Chemical Industries Ltd.
- Kazuo Shiraki
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for producing maltooligosaccharide derivatives
- Patent number 5,393,876
- Issue date Feb 28, 1995
- Wako Pure Chemical Industries, Ltd.
- Atsunori Sano
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
ETCHING AGENT, ETCHING METHOD AND ETCHING AGENT PREPARATION LIQUID
- Publication number 20160177457
- Publication date Jun 23, 2016
- WAKO PURE CHEMICAL INDUSTRIES, LTD.
- Takahiro YOKOMIZO
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
ETCHING FLUID AND PRODUCTION METHOD FOR SILICON-BASED SUBSTRATE USI...
- Publication number 20150125985
- Publication date May 7, 2015
- WAKO PURE CHEMICAL INDUSTRIES, LTD.
- Naoko Ohuchi
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...