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:
Jun. 27, 2000
Filed:
Feb. 03, 1998
Brian Gerrard Devlin, Takarazuka, JP;
Junji Otani, Kobe, JP;
Kazuhiko Kunimoto, Takatsuki, JP;
Takashi Deno, Nishinomiya, JP;
Abul Iqbal, Arconciel, CH;
Sameer Hosam Eldin, Courtepin, CH;
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Abstract
Solid-state fluorescent composition comprising at least one host chromophore selected from the group consisting of a benzo[4,5] imidazo[2,1-a]isoindol-11-ones and an effective amount of at least one guest chromophore, and if desired a polymer C, wherein the emission spectrum of the host chromophore overlaps with the absorption spectrum of the guest chromophore, and wherein (a1) the host chromophore is covalently linked to a polymer backbone A ('host polymer'), and/or (a2) the guest chromophore is covalently linked to a polymer backbone B ('guest polymer').