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US5513019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semi-transparent reflective layer for a phase hologram
Assignee: Crown Roll Leaf Inc
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Filing: 1993-10-26
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Granted: 1996-04-30
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Expires: 2013-10-26
Abstract
Abstract A phase hologram is embossed in a mylar web having a reflective layer which is made from tin tungsten oxide, zinc sulfide, or a mixture thereof. 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 16:41
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/06; C23C14/0623; C23C14/0629; B; B42; B42D; B42D25/00; B42D25/30; B42D25/328; C23C14/22; C23C14/24; C23C14/26; C23C14/56; C23C14/562; G; G03; G03H; G03H1/00; G03H1/0005; G03H1/0011; G03H1/02; G03H1/024; G03H1/0244; G03H1/0276; G03H1/028; G03H2250/00; G03H2250/36
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
60 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 a mixture of tin tungsten oxide and zinc sulfide 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
60 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 a mixture of tin tungsten oxide and zinc sulfide 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
34 words
The hologram of claim 1, wherein said mixture has a ratio of about 80% to about 99% by weight of tin tungsten oxide and about 20% to about 1% by weight of zinc sulfide.
Claim 4
Dependent Claim
14 words
The hologram of claim 2, wherein said substrate is an optically clear thermoplastic film.
Claim 5
Dependent Claim
28 words
The hologram or claim 3, wherein said film is mylar and said mixture has a thickness in a range of from about 5,000 angstroms to about 7,000 angstroms.
Claim 6
Dependent Claim
23 words
The hologram of claim 2, wherein said ratio is 90% by weight of tin tungsten oxide and 10% by weight of zinc sulfide.
Claim 7
Independent Claim
64 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 a mixture of tin tungsten oxide and zinc sulphide upon said embossed microtexture, said reflective layer having a refractive index different from that of said substrate and being at least semi-transparent.
Claim 8
Independent Claim
64 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 a mixture of tin tungsten oxide and zinc sulphide upon said embossed microtexture, said reflective layer having a refractive index different from that of said substrate and being at least semi-transparent.
Claim 9
Dependent Claim
34 words
The method of claim 6, wherein said mixture has a ratio of about 80% to about 99% by weight of tin tungsten oxide and about 20% to about 1% by weight of zinc sulfide.
Claim 10
Dependent Claim
14 words
The method of claim 7, wherein said depositing step is performed by vapor deposition.
Claim 11
Dependent Claim
15 words
The method of claim 8, wherein said embossing step is performed upon a thermoplastic film.
Claim 12
Dependent Claim
23 words
The method of claim 9, wherein said ratio is 90% by weight of tin tungsten oxide and 10% by weight of zinc sulfide.
Claim 13
Dependent Claim
11 words
The method of claim 9, wherein said thermoplastic film is mylar.
Claim 14
Dependent Claim
13 words
The method of claim 11, wherein said thermoplastic film is in web form.
Claim 15
Dependent Claim
25 words
The method of claim 12, wherein said mixture is deposited to a thickness in a range of from about 5,000 angstroms to about 7,000 angstroms.
Claim 16
Dependent Claim
38 words
The method of claim 13, wherein said mixture is deposited upon said film by advancing said web through a vacuum deposition chamber at a feed rate in a range of from about 400 feet/minute to about 600 feet/minute.
Claim 17
Dependent Claim
20 words
The method of claim 14, wherein said vacuum deposition chamber is operated at a vacuum of approximately 10 -5 Torr.
Claim 18
Dependent Claim
66 words
An authenticated document, comprising: (a) a substrate bearing encoded data; and (b) a holographic overlay 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 and comprising a reflective layer comprising tin tungsten oxide and zinc sulfide.
Claim 19
Dependent Claim
66 words
An authenticated document, comprising: (a) a substrate bearing encoded data; and (b) a holographic overlay 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 and comprising a reflective layer comprising tin tungsten oxide and zinc sulfide.
Claim 20
Dependent Claim
18 words
The document of claim 16, wherein said holographic overlay is a phase hologram having a semi-transparent reflective layer.
Claim 21
Dependent Claim
14 words
The document of claim 16, wherein said data includes data encoded in printed text.
Claim 22
Dependent Claim
11 words
The document of claim 18, wherein said data includes a photograph.
Claim 23
Dependent Claim
12 words
The document of claim 19, wherein said data includes a handwritten signature.
Claim 24
Dependent Claim
15 words
The document of claim 20, wherein said reflective layer is made from tin tungsten oxide.
Claim 25
Dependent Claim
34 words
The document of claim 17, wherein said mixture has a ratio of about 80% to about 99% by weight of tin tungsten oxide and about 20% to about 1% by weight of zinc sulfide.
Claim 26
Dependent Claim
23 words
The document of claim 22, wherein said ratio is 90% by weight of tin tungsten oxide and 10% by weight of zinc sulfide.
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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) | 1999-04-30 | 1999-10-30 | 2000-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-30 | 2003-10-30 | 2004-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-30 | 2007-10-30 | 2008-04-30 | $7700.00 | Window Closed / Lapsed |