Hiroki HAGIHARA

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Kyoto, JP

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Patents Grantslast 30 patents

Information Patent Grant
Viscosity index improver composition and lubricating oil composition
- Patent number 12,168,756
- Issue date Dec 17, 2024
- Sanyo Chemical Industries, Ltd.
- Nobuhiro Naito
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Viscosity index improver and lubricating oil composition
- Patent number 11,008,528
- Issue date May 18, 2021
- Sanyo Chemical Industries, Ltd.
- Hiroki Hagihara
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
VISCOSITY INDEX IMPROVER COMPOSITION AND LUBRICATING OIL COMPOSITION
- Publication number 20230340357
- Publication date Oct 26, 2023
- SANYO CHEMICAL INDUSTRIES, LTD.
- Nobuhiro NAITO
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
VISCOSITY INDEX IMPROVER AND LUBRICATING OIL COMPOSITION
- Publication number 20200071632
- Publication date Mar 5, 2020
- SANYO CHEMICAL INDUSTRIES, LTD.
- Hiroki HAGIHARA
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...