US5351142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semi-transparent reflective layer for a phase hologram
Assignee: Crown Roll Leaf Inc
•
Filing: 1993-04-16
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Granted: 1994-09-27
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Expires: 2013-04-16
Abstract
Abstract A phase hologram is embossed in a mylar web having a tin tungsten oxide reflective layer deposited upon. The embossed microtexture produces a hologram that is semi-transparent, thereby allowing the visualization of indicia underlying the hologram.
Inventors
- 👤 Peter Cueli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:02
CPC Classifications
G; G03; G03H; G03H1/00; G03H1/02; G03H1/0276; G03H1/028; B; B42; B42D; B42D25/00; B42D25/30; B42D25/328; C; C23; C23C; C23C14/00; C23C14/06; C23C14/0623; C23C14/0629; C23C14/22; C23C14/24; C23C14/26; C23C14/56; C23C14/562; G03H1/0005; G03H1/0011; G03H1/024; G03H1/0244; G03H2250/00; G03H2250/36; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
54 words
A phase hologram, comprising: (a) a substrate having a holographic microtexture embossed therein on at least a portion of a surface thereof; and (b) a reflective layer of tin tungsten oxide deposited upon said embossed microtexture, said reflective layer having a refractive index different from that of said substrate and being at least semi-transparent.
Claim 2
Dependent Claim
54 words
A phase hologram, comprising: (a) a substrate having a holographic microtexture embossed therein on at least a portion of a surface thereof; and (b) a reflective layer of tin tungsten oxide deposited upon said embossed microtexture, said reflective layer having a refractive index different from that of said substrate and being at least semi-transparent.
Claim 3
Dependent Claim
14 words
The hologram of claim 1, wherein said substrate is an optically clear thermoplastic film.
Claim 4
Dependent Claim
27 words
The hologram of claim 2, wherein said film is mylar and said tin tungsten oxide has a thickness ranging from about 5,000 angstroms to about 10,000 angstroms.
Claim 5
Independent Claim
58 words
A method for producing holograms, comprising the steps of: (a) embossing a substrate with a holographic microtexture on at least a portion of a surface thereof; and (b) depositing a reflective layer of tin tungsten oxide upon said holographic microtexture, said reflective layer having a refractive index different from that of said substrate and being at least semi-transparent.
Claim 6
Independent Claim
58 words
A method for producing holograms, comprising the steps of: (a) embossing a substrate with a holographic microtexture on at least a portion of a surface thereof; and (b) depositing a reflective layer of tin tungsten oxide upon said holographic microtexture, said reflective layer having a refractive index different from that of said substrate and being at least semi-transparent.
Claim 7
Dependent Claim
14 words
The method of claim 4, wherein said depositing step is performed by vapor deposition.
Claim 8
Dependent Claim
15 words
The method of claim 5, wherein said embossing step is performed upon a thermoplastic film.
Claim 9
Dependent Claim
11 words
The method of claim 6, wherein said thermoplastic film is mylar.
Claim 10
Dependent Claim
13 words
The method of claim 6, wherein said thermoplastic film is in web form.
Claim 11
Dependent Claim
24 words
The method of claim 5, wherein said tin tungsten oxide is deposited to a thickness ranging from about 5,000 angstroms to about 10,000 angstroms.
Claim 12
Dependent Claim
40 words
The method of claim 8, wherein said tin tungsten oxide is deposited upon said film by advancing said web through a vacuum deposition chamber at a feed rate in a range of from about 50 feet/minute to about 250 feet/minute.
Claim 13
Dependent Claim
20 words
The method of claim 10, wherein said vacuum deposition chamber is operated at a vacuum of approximately 10 -5 Torr.
Claim 14
Dependent Claim
63 words
An authenticated document, comprising: (a) a substrate bearing encoded data; and (b) a holographic overlay having a semi-transparent reflective layer of tin tungsten oxide affixed to said substrate overlying at least a portion of said encoded data to prevent non-destructive separation of said overlay from said substrate, said overlay being at least semi-transparent to permit visualization of said encoded data through said overlay.
Claim 15
Dependent Claim
63 words
An authenticated document, comprising: (a) a substrate bearing encoded data; and (b) a holographic overlay having a semi-transparent reflective layer of tin tungsten oxide affixed to said substrate overlying at least a portion of said encoded data to prevent non-destructive separation of said overlay from said substrate, said overlay being at least semi-transparent to permit visualization of said encoded data through said overlay.
Claim 16
Dependent Claim
23 words
The document of claim 12, wherein said holographic overlay covers substantially all of said data on at least one surface of said document.
Claim 17
Dependent Claim
14 words
The document of claim 12, wherein said data includes data encoded in printed text.
Claim 18
Dependent Claim
11 words
The document of claim 14, wherein said data includes a photograph.
Claim 19
Dependent Claim
12 words
The document of claim 15, wherein said data includes a handwritten signature.
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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) | 1997-09-26 | 1998-03-28 | 1998-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-26 | 2002-03-28 | 2002-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-26 | 2006-03-28 | 2006-09-27 | $7700.00 | Window Closed / Lapsed |