Shinichi Umeda

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Fukuoka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical member, method of producing optical member, and apparatus f...
- Patent number 11,988,807
- Issue date May 21, 2024
- MITSUI CHEMICALS, INC.
- Soichiro Ahiko
- B24 - GRINDING POLISHING
Information Patent Grant
Polysulfide-based resin composition, polysulfide-based resin, and o...
- Patent number 5,955,206
- Issue date Sep 21, 1999
- Mitsui Chemicals, Inc.
- Koju Okazaki
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Sulfur-containing urethane-based resin composition, its resin, and...
- Patent number 5,736,609
- Issue date Apr 7, 1998
- Mitsui Toatsu Chemicals, Inc.
- Yoshihiro Irizato
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for producing 1,3-dialkyl-2-imidazolidinone
- Patent number 5,594,149
- Issue date Jan 14, 1997
- Mitsui Toatsu Chemicals, Inc.
- Hiroshi Naruse
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing 1,3-dialkyl-2-imidazolidinone
- Patent number 5,583,256
- Issue date Dec 10, 1996
- Mitsui Toatsu Chemicals, Inc.
- Hiroshi Naruse
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
1,3,6-trialkylhexahydro-1,3,6-triazocine-2-on and preparation proce...
- Patent number 5,514,793
- Issue date May 7, 1996
- Mitsui Toatsu Chemicals, Inc.
- Hiroshi Naruse
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL MEMBER, METHOD OF PRODUCING OPTICAL MEMBER, AND APPARATUS F...
- Publication number 20220120935
- Publication date Apr 21, 2022
- Mitsui Chemicals, Inc.
- Soichiro AHIKO
- B24 - GRINDING POLISHING