Ryutaro Hayashi

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Saitama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical information carrier having a spacer securely bonded between...
- Patent number 5,305,304
- Issue date Apr 19, 1994
- Pioneer Electronic Corporation
- Ryutaro Hayashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical recording disk
- Patent number 5,036,510
- Issue date Jul 30, 1991
- Pioneer Electronic Corporation
- Ryutaro Hayashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disc manufacturing apparatus
- Patent number 4,995,799
- Issue date Feb 26, 1991
- Pioneer Electronic Corporation
- Ryutaro Hayashi
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Optical disk and process for producing the same
- Patent number 4,853,260
- Issue date Aug 1, 1989
- Pioneer Electronic Corporation
- Yukio Kimura
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical information recording disk
- Patent number 4,847,827
- Issue date Jul 11, 1989
- Pioneer Electric Corporation
- Ryutaro Hayashi
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL