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:
Apr. 29, 2014
Filed:
Dec. 12, 2009
Friedrich-karl Bruder, Krefeld, DE;
Wilfried Haese, Odenthal, DE;
Rafael Oser, Krefeld, DE;
Rainer Protte, Dormagen, DE;
Alexander Meyer, Düsseldorf, DE;
Karlheinz Hildenbrand, Krefeld, DE;
Raymond Wong, Hong Kong, CN;
Ice Zhang, Shanghai, CN;
Friedrich-Karl Bruder, Krefeld, DE;
Wilfried Haese, Odenthal, DE;
Rafael Oser, Krefeld, DE;
Rainer Protte, Dormagen, DE;
Alexander Meyer, Düsseldorf, DE;
Karlheinz Hildenbrand, Krefeld, DE;
Raymond Wong, Hong Kong, CN;
Ice Zhang, Shanghai, CN;
Bayer MaterialScience AG, Leverkusen, DE;
Abstract
This invention relates to an optical recording medium in which at least a recording layer and a light transmitting layer are sequentially formed on a substrate and in which the light is illuminated from the light transmitting layer side for recording and/or reproducing information signals, said substrate comprising an injection molded part, and said substrate having a Young's modulus E of at least 2.15 GPa and a Q factor of lower than 160 measured at 25° C. at 2000 Hz in accordance to ASTM E 756-05 05 and a transcriptability of the pit/groove structure of >85%.