US4359633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spectrally-limited bar-code label and identification card
Assignee: Individual
•
Filing: 1980-10-28
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Granted: 1982-11-16
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Expires: 2000-10-28
Abstract
Abstract A label or identification card has a base with a region which absorbs invisible light and a region which reflects invisible light. Both regions absorb visible light over a predetermined spectral range. A filter is disposed on the base. The filter transmits both invisible light and visible light over the said spectral range, while absorbing visible light over the spectral range outside the said range absorbed by the two regions of the base. Accordingly, the unaided human eye cannot perceive the information represented by the array of the regions on the base, while this array can be detected by scanning with invisible light. In one embodiment, the bar code is a return-to-zero double frequency code.
Inventors
- 👤 James S. Bianco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:06
CPC Classifications
G; G06; G06K; G06K19/00; G06K19/06; G06K19/08; G06K19/10; G06K19/14
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
121 words
An article for storing information in a form substantially concealed from the unaided human eye, comprising: a base member forming a surface having at least one first region and at least one second region arrayed thereon in accordance with a predetermined information code, said first region being adapted substantially to absorb and said second region being adapted substantially to reflect invisible radiation in a first predetermined spectral range; said first and second regions being further adapted substantially to absorb visible radiation in a second predetermined spectral range; and means forming a filter disposed on said surface for transmitting radiation in at least said first and second predetermined spectral ranges and for substantially absorbing visible radiation outside said second predetermined spectral range.
Claim 2
Dependent Claim
121 words
An article for storing information in a form substantially concealed from the unaided human eye, comprising: a base member forming a surface having at least one first region and at least one second region arrayed thereon in accordance with a predetermined information code, said first region being adapted substantially to absorb and said second region being adapted substantially to reflect invisible radiation in a first predetermined spectral range; said first and second regions being further adapted substantially to absorb visible radiation in a second predetermined spectral range; and means forming a filter disposed on said surface for transmitting radiation in at least said first and second predetermined spectral ranges and for substantially absorbing visible radiation outside said second predetermined spectral range.
Claim 3
Dependent Claim
26 words
An article according to claim 1, said predetermined information code being a bar code, and said surface being provided with a plurality of said first regions.
Claim 4
Dependent Claim
18 words
An article according to claim 1, said first predetermined spectral range being a range within the infrared spectrum.
Claim 5
Dependent Claim
22 words
An article according to claim 3, said second predetermined spectral range being a range within the low-frequency portion of the visible spectrum.
Claim 6
Dependent Claim
22 words
An article according to claim 3, said second predetermined spectral range being a range within the red-orange portion of the visible spectrum.
Claim 7
Dependent Claim
33 words
An article according to claim 4, said first region comprising carbon-containing black ink, said second region comprising blue or green ink, and said means forming a filter comprising transparent red or orange plastic.
Claim 8
Dependent Claim
41 words
An article according to claim 6, said means forming a filter being bonded to said surface whereby an attempt to remove said filter means from said surface substantially destroys the information residing in the array of said first and second regions.
Claim 9
Dependent Claim
24 words
An article according to claim 4, said base comprising a support and an overlay of transparent blue or green material disposed on said support.
Claim 10
Dependent Claim
22 words
An article according to claim 3, said second predetermined spectral range being a range within the high-frequency portion of the visible spectrum.
Claim 11
Dependent Claim
22 words
An article according to claim 3, said second predetermined spectral range being a range within the blue-green portion of the visible spectrum.
Claim 12
Dependent Claim
42 words
An article according to claim 9, said base comprising a support, an overlay of transparent red or orange material disposed on said support, and a photographic film bearing the image of a bar code; said photographic film being disposed on said overlay.
Claim 13
Dependent Claim
22 words
An article according to claim 1, said base comprising a support and an overlay of transparent colored material disposed on said support.
Claim 14
Dependent Claim
40 words
An article according to claim 1, said base comprising a support, an overlay of transparent colored material disposed on said support, and a photographic film bearing the image of a bar code; said photographic film being disposed on said overlay.
Claim 15
Dependent Claim
27 words
An article according to claim 1, said filter having a surface bearing indicia visible to the unaided human eye, said indicia being substantially transparent to invisible light.
References Cited (Backward Citations)
US3829662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-15 | 1986-05-17 | 1986-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-15 | 1990-05-17 | 1990-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-15 | 1994-05-17 | 1994-11-16 | $7700.00 | Window Closed / Lapsed |