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:
Nov. 25, 1980
Filed:
Nov. 17, 1978
Applicant:
Inventors:
Herbert Halpaap, Seeheim-Jugenheim, DE;
Manfred Eckle, Puttlingen, DE;
Hubert Rossler, Darmstadt, DE;
Assignee:
Merck Patent Gesellschaft mit beschrankter Haftung, Darmstadt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01J / ; B01J / ; B01J / ;
U.S. Cl.
CPC ...
210 / ; 2101 / ; 252457 ; 252468 ;
Abstract
Magnesium, calcium, strontium, barium, zinc and/or cadmium tungstate and/or calcium molybdate are good fluorescent indicators for use in sorption agents for chromatography. They are especially useful because of the stability of their fluorescent properties to acidic treatment.