US5605650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Security of articles, goods, vehicles or premises
Assignee: Detertech Holdings Ltd
•
Filing: 1991-10-02
•
Granted: 1997-02-25
•
Expires: 2011-10-02
Abstract
Abstract A method is disclosed for detecting tampering, comprising applying to at least a portion of a surface of an object a composition comprising at least one fluorescent material and a solvent medium for the fluorescent material, the solvent medium containing a volatile solvent, and the composition being colorless, odorless and having no feel upon application as a film to the surface of the object, and being capable of transfer from the surface of the object to another surface; and directly transferring the composition from the object to a person tampering with the object.
Inventors
- 👤 Micheal Cleary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:44
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/50; B; B41; B41M; B41M3/00; B41M3/14; B41M3/144; C09K; C09K11/00; C09K11/06
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
87 words
A method for detecting tampering, comprising applying to at least a portion of a surface of an object a composition comprising at least one fluorescent material and a solvent medium therefor, said solvent medium containing a volatile solvent and said composition being colorless, odorless and having no feel thereto upon application as a film to the surface of said object, and being capable of transfer from the surface of said object to another surface, and directly transferring said composition from said object to a person tampering therewith.
Claim 2
Independent Claim
87 words
A method for detecting tampering, comprising applying to at least a portion of a surface of an object a composition comprising at least one fluorescent material and a solvent medium therefor, said solvent medium containing a volatile solvent and said composition being colorless, odorless and having no feel thereto upon application as a film to the surface of said object, and being capable of transfer from the surface of said object to another surface, and directly transferring said composition from said object to a person tampering therewith.
Claim 3
Dependent Claim
18 words
A method as claimed in claim 1, wherein said tampering comprises unauthorized entering of a property or vehicle.
Claim 4
Dependent Claim
23 words
A method as claimed in claim 1, additionally comprising detecting said composition on the person by irradiation with a source of ultraviolet light.
Claim 5
Dependent Claim
28 words
A method as claimed in claim 1, additionally comprising preparing individual batches of said composition, each including one or more trace elements as an identifier of the batch.
Claim 6
Dependent Claim
27 words
A method as claimed in claim 1, wherein said at least one fluorescent material comprises first and second fluorescent materials having differing max absorption or emission frequencies.
Claim 7
Dependent Claim
30 words
A method as claimed in claim 1, wherein said at least one fluorescent material comprises a fluorescent material selected from the group consisting of coumarin, oxazinone, stilbene and fluorescein compounds.
Claim 8
Dependent Claim
23 words
A method as claimed in claim 6, wherein the coumarin compound is selected from the group consisting of 7-hydroxy-4-methyl coumarin and 7-diethylamino-4-methyl coumarin.
Claim 9
Dependent Claim
28 words
A method as claimed in claim 1, wherein said at least one fluorescent material is present in an amount of 0.1 to 40% by weight of the composition.
Claim 10
Dependent Claim
16 words
A method as claimed in claim 1, wherein the fluorescent material fluoresces at a selected color.
Claim 11
Dependent Claim
16 words
A method as claimed in claim 1, wherein the fluorescent material is applied in spray form.
Claim 12
Dependent Claim
19 words
A method as claimed in claim 10, wherein the solvent medium comprises a mixture of volatile and non-volatile solvents.
Claim 13
Dependent Claim
14 words
A method as claimed in claim 11, wherein the volatile solvent is an alcohol.
Claim 14
Dependent Claim
14 words
A method as claimed in claim 12, wherein the volatile solvent is isopropyl alcohol.
Claim 15
Dependent Claim
14 words
A method as claimed in claim 11, wherein the non-volatile solvent is isopropyl myristate.
Claim 16
Dependent Claim
20 words
A method as claimed in claim 11, wherein the composition additionally comprises a propellant to enable applying in aerosol form.
Claim 17
Dependent Claim
17 words
A method as claimed in claim 1, wherein the composition is a water based solution or suspension.
Claim 18
Dependent Claim
37 words
A method as claimed in claim 16, wherein the composition comprises a solution of a fluorescein compound or a diamino stilbene disulphonic acid compound in an amount of 0.1 to 20% by weight in a polymer latex.
Claim 19
Dependent Claim
39 words
A method as claimed in claim 16, wherein the composition is a suspension comprising an oxazinone compound at a level of 0.1 to 20% by weight stabilized by an anionic surfactant, and in the presence of a polymer latex.
Claim 20
Dependent Claim
14 words
A method as claimed in claim 1, wherein the composition additionally comprises a surfactant.
Claim 21
Dependent Claim
16 words
A method as claimed in claim 19, wherein the surfactant is polyethylene glycol or polypropylene glycol.
Claim 22
Dependent Claim
50 words
A composition for detecting tampering comprising 0.1 to 20% of a fluorescent oxazinone compound in aqueous suspension stabilized by an anionic surfactant and in the presence of a polymer latex, said composition being colorless, odorless and having no feel thereto, and being capable of transfer from one surface to another.
Claim 23
Dependent Claim
50 words
A composition for detecting tampering comprising 0.1 to 20% of a fluorescent oxazinone compound in aqueous suspension stabilized by an anionic surfactant and in the presence of a polymer latex, said composition being colorless, odorless and having no feel thereto, and being capable of transfer from one surface to another.
References Cited (Backward Citations)
US2871697A
Cited
US3335137A
Cited
US3640889A
Cited
US3666680A
Cited
GB1381973A
Cited
US3830682A
Cited
US4141748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-02-25 | 2000-08-26 | 2001-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-02-25 | 2004-08-26 | 2005-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-02-25 | 2008-08-26 | 2009-02-25 | $7700.00 | Window Closed / Lapsed |