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. 25, 2001
Filed:
Aug. 04, 1999
Applicant:
Inventors:
Robert J. Holt, Cornwall-on-Hudson, NY (US);
David J. Haas, Suffern, NY (US);
Assignee:
Temtec, Inc., Suffern, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G04B 1/700 ; G01N 3/132 ;
U.S. Cl.
CPC ...
G04B 1/700 ; G01N 3/132 ;
Abstract
A migrating dye indicator that includes a display layer and a base substrate layer. An adhesive layer is on one surface of the display layer for adhesively attaching the display layer to the base layer. The base layer includes a migrating dye capable of migrating through the adhesive layer to the display layer when the adhesive layer is placed in contact therewith. The adhesive layer contains an accelerator for enhancing the migration of the dye through the adhesive layer. The base layer contains a means for absorbing the accelerator into the base layer.