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:
Jul. 19, 2011
Filed:
Dec. 04, 2007
Applicants:
Gregory Bydlinski, Kirkland, CA;
Robert Gregg Harris, Fort Worth, TX (US);
Britt S. Scott, Burleson, TX (US);
Inventors:
Gregory Bydlinski, Kirkland, CA;
Robert Gregg Harris, Fort Worth, TX (US);
Britt S. Scott, Burleson, TX (US);
Assignee:
Alcon Research, Ltd., Fort Worth, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 311/82 (2006.01); C07D 311/78 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention is directed to an improved process for producing substantially pure fluorescein, as well as to substantially pure fluorescein compositions prepared by the process. The invention is particularly directed to the provision of pharmaceutical compositions for use in angiography. The substantially pure fluorescein produced by the process of the present invention is low in color, low in sodium chloride content, and substantially free of pyridine.