Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Method of use – kit – or combined with marking instrument or...
Reexamination Certificate
2007-01-16
2007-01-16
Hess, Bruce H. (Department: 1774)
Record receiver having plural interactive leaves or a colorless
Having a colorless color-former, developer therefor, or...
Method of use, kit, or combined with marking instrument or...
C283S094000, C283S095000, C503S216000
Reexamination Certificate
active
10831525
ABSTRACT:
A rapidly reversing authenticity indicator for substrates such as secure documents, tags and labels is described. The authenticity indicator comprises a substrate having provided thereon a coating of a colorless chromogenic material, a binder material and optional pigment. An applicator is provided containing a developer material solution for the colorless chromogen. In one embodiment, the developer material solution is preferably an organic acid of five carbons or less and is selected to have a molecular weight of 102 or less, a pH of less than 5, and preferably positive vapor pressure. The coated substrate when contacted with the developer material in the applicator develops an intense color that persists momentarily rapidly reverting to substantially a colorless or pale form to provide a visual indication of authenticity without permanent discoloration of the substrate or inadvertent coloration or undue false positives.
REFERENCES:
patent: 3363336 (1968-01-01), Skinner
patent: 3957495 (1976-05-01), Teranishi et al.
patent: 4037007 (1977-07-01), Wood
patent: 4171982 (1979-10-01), Lin
patent: 4272106 (1981-06-01), Auger
patent: 4496961 (1985-01-01), Devrient
patent: 4680598 (1987-07-01), Obitsu et al.
patent: 4687862 (1987-08-01), Obitsu et al.
patent: 4865648 (1989-09-01), Kito et al.
patent: 5063163 (1991-11-01), Carmeli
patent: 5130290 (1992-07-01), Tanimoto
patent: 5139572 (1992-08-01), Kawashima
patent: 5196243 (1993-03-01), Kawashima
patent: 5209515 (1993-05-01), Dotson et al.
patent: 5215956 (1993-06-01), Kawashima
patent: 5250492 (1993-10-01), Dotson et al.
patent: 5286061 (1994-02-01), Behm
patent: 5290068 (1994-03-01), Gundjian
patent: 5395138 (1995-03-01), Chang
patent: 5427415 (1995-06-01), Chang
patent: 5460647 (1995-10-01), Snedeker et al.
patent: 5485792 (1996-01-01), Keyser et al.
patent: 5486228 (1996-01-01), Miller et al.
patent: 5595590 (1997-01-01), Belding et al.
patent: 5595955 (1997-01-01), Chang et al.
patent: 5605873 (1997-02-01), Chang
patent: 5698296 (1997-12-01), Dotson et al.
patent: 5786509 (1998-07-01), Belding et al.
patent: 6114281 (2000-09-01), Belding et al.
patent: 6203603 (2001-03-01), Takayama et al.
patent: 6783991 (2004-08-01), Mehta et al.
patent: 2003/0089270 (2003-05-01), Shen et al.
patent: 0530059 (1993-03-01), None
Forty Centuries of Ink by David N. Carvalho, First Edition, New York, The Banks Law Publishing Co., Copyright 1904.
An Ancient Art and Modern Sport by Charles de Beaumont, ES Barnes, 1978.
Appleton Papers Inc.
Hess Bruce H.
Mieliulis Benjamin
LandOfFree
Authenticity indicator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Authenticity indicator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Authenticity indicator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3825897