Yoshihiro Sezaki

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Osaka-fu, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for refining methacrylic acid
- Patent number 5,959,142
- Issue date Sep 28, 1999
- Mitsui Chemicals, Inc.
- Kazuo Wakimura
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Purification process of methacrylic acid
- Patent number 5,196,578
- Issue date Mar 23, 1993
- Mitsui Toatsu Chemicals, Incorporated
- Morimasa Kuragano
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Quenching process of reaction product gas containing methacrylic ac...
- Patent number 4,987,252
- Issue date Jan 22, 1991
- Mitsui Toatsu Chemicals, Incorporated
- Morimasa Kuragano
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Purification process of methacrylic acid
- Patent number 4,879,412
- Issue date Nov 7, 1989
- Mitsui Toatsu Chemicals, Inc.
- Kozo Iwasaki
- C07 - ORGANIC CHEMISTRY