The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 24, 2004
Filed:
Jan. 25, 2001
Manabu Oumi, Chiba, JP;
Nobuyuki Kasama, Chiba, JP;
Hidetaka Maeda, Chiba, JP;
Kenji Kato, Chiba, JP;
Takashi Niwa, Chiba, JP;
Yasuyuki Mitsuoka, Chiba, JP;
Yoko Shinohara, Chiba, JP;
Seiko Instruments Inc., Chiba, JP;
Abstract
A recording medium for recording and reproducing information utilizing near field light has a transparent substrate and a data mark arrangement layer disposed over a surface of the transparent substrate. A metal particulate is dispersed only in the data mark arrangement layer so that a surface plasma is generated upon interaction of the data mark arrangement layer with near field light generated by incident light or irradiating light to thereby amplify the intensity of scattered light generated as a result of the interaction between the data mark arrangement layer and the near field light.