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. 03, 2015
Filed:
Apr. 10, 2007
Applicants:
Christian Fabian, Waghäusel, DE;
Bernhard Seider, Malsburg-Marzell, DE;
Hans Reichert, Rheinfelden, DE;
Inventors:
Christian Fabian, Waghäusel, DE;
Bernhard Seider, Malsburg-Marzell, DE;
Hans Reichert, Rheinfelden, DE;
Assignee:
Ciba Corp., Tarrytown, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D06L 3/12 (2006.01); C11D 3/42 (2006.01); C09K 11/77 (2006.01); D21H 21/30 (2006.01); C08K 3/32 (2006.01);
U.S. Cl.
CPC ...
C11D 3/42 (2013.01); C09K 11/7734 (2013.01); C09K 11/7738 (2013.01); D21H 21/30 (2013.01); C08K 3/32 (2013.01); Y10S 8/919 (2013.01);
Abstract
The invention relates to novel inorganic brighteners, a process for their preparation and their use for brightening substrates. More specifically, the novel inorganic brighteners are phosphors characterized in that they have (i) an absorption maximum in the range of from 350 to 375 nm; (ii) a steep decrease of the absorption band near 400 nm; (iii) a quantum yield of the phosphorescence of at least 0.8; and (iv) a phosphorescence maximum in the range between 415 and 445 nm.