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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.:

US 6737142 B1

PDFFull Text
Expired
Date of Patent:
May. 18, 2004

Filed:

Mar. 20, 2002

Optical data store comprising an axially substituted cobalt phthalocyanine in the light-writeable information layer

Applicant:
Inventors:

Horst Berneth, Leverkusen, DE;

Friedrich-Karl Bruder, Krefeld, DE;

Wilfried Haese, Odenthal, DE;

Rainer Hagen, Leverkusen, DE;

Karin Hassenrück, Düsseldorf, DE;

Serguei Kostromine, Swisttal, DE;

Peter Landenberger, Köln, DE;

Rafael Oser, Krefeld, DE;

Thomas Sommermann, Bergisch Gladbach, DE;

Josef-Walter Stawitz, Odenthal, DE;

Thomas Bieringer, Odenthal, DE;

Assignee:

Bayer Aktiengesellschaft, Leverkusen, DE;

Attorney:
Primary Examiner:

Elizabeth Mulvaney

Int. Cl.
CPC ...
B32B 3/02 ;
U.S. Cl.
CPC ...
B32B 3/02 ;
Abstract

Optical data carrier comprising a preferably transparent substrate which may, if desired, have previously been coated with one or more reflection layers and to whose surface a light-writeable information layer, if desired one or more reflection layers and if desired a protective layer or a further substrate or a covering layer have been applied, which can be written on and read by means of infrared light, preferably laser light, particularly preferably light having a wavelength in the range 750-800 nm, in particular 770-790 nm, where the information layer comprises a light-absorbent compound and, if desired, a binder, characterized in that at least one cobalt(III) phthalocyanine in which the Co metal centre bears two axial substituents R and R which represent, independently of one another, CN, SCN, alkoxy or alkylthio is used as light-absorbent compound.

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Berneth, Horst. (2004). Optical data store comprising an axially substituted cobalt phthalocyanine in the light-writeable information layer (U.S. Patent No. 6737142). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6737142

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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