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:
Sep. 28, 1999
Filed:
Feb. 27, 1997
James G Bentsen, North St. Paul, MN (US);
Shih-Hung Chou, Maplewood, MN (US);
Elisa M Cross, St. Paul, MN (US);
Kurt J Halverson, Lake Elmo, MN (US);
John E Trend, St. Paul, MN (US);
Cary A Kipke, Woodbury, MN (US);
Masao Yafuso, Lake Forest, CA (US);
Sanjay L Patil, Aliso Viejo, CA (US);
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Abstract
A fluorescent ionophoric compound is disclosed that includes a complexing moiety, such as a cryptand or crown-ether portion, and a fluorescing moiety such as a coumarin portion. The coumarin portion may be substituted at the 3-position with an electron withdrawing or polarizable group such as a substituted aromatic group or a substituted heterocyclic group having a heteroatom in at least one of its alpha positions. The compound, which exhibits good photostability, can be incorporated into cation-sensing composite structures by means of convenient points of covalent attachment.