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. 25, 2003
Filed:
Apr. 17, 2001
Applicant:
Inventors:
Kristin E. Buentello, Newtown, PA (US);
Larry M. Kye, Yardley, PA (US);
Elizabeth Yibin Zhang, North Wales, PA (US);
Victoria Rafalovsky, Yardley, PA (US);
Alan M. Agree, Morrisville, PA (US);
Assignee:
GE Betz, Inc., Trevose, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B 1/734 ;
U.S. Cl.
CPC ...
C09B 1/734 ;
Abstract
Stabilized metachromatic dyes, especially at application concentrations, comprising metachromatic dyes dissolved in one or more non-aqueous solvents, as well as metachromatic dyes dissolved in pH stabilized aqueous solutions. Also, various combinations of treatments are disclosed for stabilizing metachromatic dyes.