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:
May. 24, 2005
Filed:
Jul. 05, 1995
Akihiko Okamoto, Kanagawa, JP;
Akihiko Okamoto, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An optical disc cartridge for storing an optical disc. The cover of the optical disc cartridge absorbs or filters ambient light which may damage information stored on the disc after prolonged exposure to the ambient light. Preferably, the disc cartridge cover allows some visible light to pass in order to allow a user to read label information on the disc. The color of the cover may be transparent to visible light, allow only specific visible wavelengths of light to pass, or be opaque, as long as the amount of ambient light reaching the disc stored within the disc cartridge is reduced. The disc cover may be made of a single layer or include a base layer with one or more thin films thereon.