Kazumasa Yoneyama

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Otsu, JP

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Patents Grantslast 30 patents

Information Patent Grant
Aromatic polyamide film and magnetic recording medium using the same
- Patent number 6,096,419
- Issue date Aug 1, 2000
- Toray Industries, Inc.
- Nobuaki Ito
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Aromatic polyamide film
- Patent number 6,010,765
- Issue date Jan 4, 2000
- Toray Industries, Inc.
- Akimitsu Tsukuda
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium having specified base film surface charac...
- Patent number 5,686,166
- Issue date Nov 11, 1997
- Toray Industries, Inc.
- Akimitsu Tsukuda
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium having an aromatic polyamide substrate
- Patent number 5,645,918
- Issue date Jul 8, 1997
- Toray Industries, Inc.
- Nobuaki Ito
- G11 - INFORMATION STORAGE