Fumio Hirota

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Colorants, polyester fibers mass-colored therewith and process for...
- Patent number 5,106,905
- Issue date Apr 21, 1992
- Nippon Ester Company, Ltd.
- Shosuke Oku
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Black liquid colorant and polyester fibers dope-dyed therewith
- Patent number 4,879,335
- Issue date Nov 7, 1989
- Toyo Ink Mfg. Co., Ltd.
- Fumio Hirota
- C01 - INORGANIC CHEMISTRY