Stock material or miscellaneous articles – Circular sheet or circular blank – Recording medium or carrier
Reexamination Certificate
2007-05-08
2007-05-08
Hess, Bruce H. (Department: 1774)
Stock material or miscellaneous articles
Circular sheet or circular blank
Recording medium or carrier
C428S064500, C428S064600, C430S270130
Reexamination Certificate
active
10972768
ABSTRACT:
A phase-change optical recording medium has a recording film that brings about reversible phase-change between a crystalline phase and an amorphous phase upon irradiation with light and an interface film formed in contact with at least one surface of the recording film and comprising hafnium (Hf), silicon (Si), oxygen (O) and carbon (C).
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T. Inase et al., “Investigation of Protective Layer for High Transfer Rate Phase Change Optical Disk,” Tokyo Research Lab., Tosoh Corp., pp. 37-42 (Proceedings of the 13thSymposium of Phase Change Optical Information Storage Digest (Dec. 6, 2001)).
Rie Kojima et al., “Ge-Sn-Sb-Te Phase-change Recording Material Having High Crystallization Speed,” Optical Disk Systems Development Center, Matsushita Electric Industrial Co., Ltd., pp. 36-41 (Proceedings of PCOS 2000, Nov. 30-Dec. 1, 2000).
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Ashida Sumio
Ichihara, Deceased Katsutaro
Ichihara, Legal Representative Urara
Nakai Tsukasa
Nakamura Naomasa
Hess Bruce H.
Kabushiki Kaisha Toshiba
Pillsbury Winthrop Shaw & Pittman LLP
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