Masafumi Koseki

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Patents Grantslast 30 patents

Information Patent Grant
Biaxially oriented polyester film for magnetic recording media
- Patent number 6,190,753
- Issue date Feb 20, 2001
- Teijin Limited
- Masafumi Koseki
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Biaxially oriented laminate polyester film
- Patent number 6,068,909
- Issue date May 30, 2000
- Teijin Limited
- Masafumi Koseki
- B32 - LAYERED PRODUCTS
Information Patent Grant
Biaxially oriented laminate polyester film
- Patent number 5,919,550
- Issue date Jul 6, 1999
- Teijin Limited
- Masafumi Koseki
- B32 - LAYERED PRODUCTS