Hiroshi Takayanagi

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Polyamide-imide resins and production thereof
- Patent number 5,157,097
- Issue date Oct 20, 1992
- Mitsui Toatsu Chemicals, Incorporated
- Hiroshi Takayanagi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for refining 1,3-dimethyl-2-imidazolidinone
- Patent number 5,075,406
- Issue date Dec 24, 1991
- Mitsui Toatsu Chemicals, Inc.
- Tadashi Kobayashi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for refining 1,3-dimethyl-2-imidazolidinone
- Patent number 5,011,936
- Issue date Apr 30, 1991
- Mitsui Toatsu Chemicals, Inc.
- Tadashi Kobayashi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Production process of aromatic polyamide
- Patent number 4,923,951
- Issue date May 8, 1990
- Mitsui Toatsu Chemicals, Incorporated
- Tadashi Kobayashi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Preparation process of dl-lactic acid-glycolic acid-copolymer
- Patent number 4,859,763
- Issue date Aug 22, 1989
- Mitsui Toatsu Chemicals, Incorporated
- Hiroshi Takayanagi
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Indigo blue-colored bioabsorbable surgical fibers and production pr...
- Patent number 4,750,910
- Issue date Jun 14, 1988
- Mitsui Toatsu Chemicals, Incorporated
- Hiroshi Takayanagi
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE