Patent US1022098A successfully refreshed from Google Patents.
US4457430A
Expired / Lapsed
US
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Tamper resistant security package
Assignee: Drg Inc
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Filing: 1983-06-13
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Granted: 1984-07-03
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Expires: 2003-06-13
Abstract
Abstract A tamper-resistant package for an article to which access is intended only by destruction of the package has two webs of sheet material having inner surfaces securable together around their peripheries to form the package with the article lying between the webs. A solvent indicator ink is printed on one of the webs, the solvent indicator ink containing an organic dye which bleeds to a visible part of the package upon application of a readily-available common polar or non-polar solvent. A water-sensitive coating is provided on one of the webs to produce a visible indication if an attempt is made to open the package with water, and a heat-sensitive ink is printed on one of the webs to produce a visible change when an attempt is made to open the package by the use of heat.
Inventors
- 👤 Stewart A. Darling
- 👤 Tadeusz Kostanecki
- 👤 George Soos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:39
CPC Classifications
B; B65; B65D; B65D27/00; B65D27/12; B65D27/30; B65D75/00; B65D75/26; Y; Y10; Y10S; Y10S206/00; Y10S206/807
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
131 words
A tamper-resistant package for an article to which access is intended only by destruction of the package, comprising two webs of sheet material having inner surfaces securable together around their peripheries to form the package with the article lying between the webs, a solvent indicator ink printed on one of the webs, said solvent indicator ink comprising an organic dye which bleeds to a visible part of the package upon application of a readily-available common polar or non-polar solvent, a water-sensitive coating on one of the webs which produces a visible indication if an attempt is made to open the package with water, a heat-sensitive ink printed on one of the webs which produces a visible change when an attempt is made to open the package by the use of heat.
Claim 2
Dependent Claim
131 words
A tamper-resistant package for an article to which access is intended only by destruction of the package, comprising two webs of sheet material having inner surfaces securable together around their peripheries to form the package with the article lying between the webs, a solvent indicator ink printed on one of the webs, said solvent indicator ink comprising an organic dye which bleeds to a visible part of the package upon application of a readily-available common polar or non-polar solvent, a water-sensitive coating on one of the webs which produces a visible indication if an attempt is made to open the package with water, a heat-sensitive ink printed on one of the webs which produces a visible change when an attempt is made to open the package by the use of heat.
Claim 3
Dependent Claim
22 words
A package according to claim 1 wherein the solvent indicator ink comprises an organic dye in combination with an organic resin binder.
Claim 4
Dependent Claim
34 words
A tamper-resistant package according to claim 2 wherein the organic resin binder is readily soluble in at least one solvent selected from the group consisting of alcohols, ketones, esters and aliphatic and aromatic hydrocarbons.
Claim 5
Dependent Claim
15 words
A package according to claim 1 wherein the solvent indicator ink comprises an azo dye.
Claim 6
Dependent Claim
15 words
A package according to claim 1 wherein the solvent indicator ink comprises a hydroquinone dye.
Claim 7
Dependent Claim
41 words
A package according to claim 1 wherein an interference layer is provided on at least one side of the solvent indicator ink to prevent premature migration of the solvent indicator ink through one or more of said webs of sheet material.
Claim 8
Dependent Claim
16 words
A package according to claim 6 wherein said interference layer comprises a resin and alcohol mixture.
Claim 9
Dependent Claim
23 words
A package according to claim 7 wherein said interference layer comprises a mixture of maleic anhydride adduct of gum resin with anhydrous alcohol.
Claim 10
Dependent Claim
16 words
A package according to claim 1 wherein the water sensitive coating comprises a blue water-soluble dye.
Claim 11
Dependent Claim
36 words
A package according to claim 9 wherein the water sensitive coating is incorporated in a cohesive on an inner surface of a web which functions to secure a periphery of the web to the other web.
Claim 12
Dependent Claim
21 words
A package according to claim 1 wherein the heat sensitive ink comprises a two component reactive system in a base resin.
Claim 13
Dependent Claim
20 words
A package according to claim 1 wherein the solvent indicator ink is provided on an inner side of one web.
Claim 14
Dependent Claim
21 words
A package according to claim 12 wherein the water sensitive coating is provided on an inner side of the other web.
Claim 15
Dependent Claim
22 words
A package according to claim 13 wherein the heat sensitive ink is provided on an outer side of one of the webs.
Claim 16
Dependent Claim
34 words
A package according to claim 12 wherein an interference layer is provided between the solvent indicator ink and said one web to prevent premature migration of the solvent indicator ink through said one web.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-03 | 1988-01-02 | 1988-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-03 | 1992-01-02 | 1992-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-03 | 1996-01-02 | 1996-07-03 | $7700.00 | Window Closed / Lapsed |