US4900111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Embossed holograms formed on hard metal surfaces
Assignee: Viavi Solutions Inc
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Filing: 1989-02-15
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Granted: 1990-02-13
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Expires: 2009-02-15
Abstract
Abstract Embossed holograms or diffraction patterns are formed on hard, unembossible metal substrates such as steel sheet metal. The hard metal substrate has a soft embossible metal layer such as tin formed on it, and holograms are embossed thereon by means of a surface relief, metal master. The soft metal layer must be sufficiently thick to accommodate the deepest surface relief pattern. For tinplate, the embossing can be preformed at room temperature. Among other things, the process produces tinplates and tin cans with embossed holograms.
Inventors
- 👤 Salvatore F. D'Amato
- 👤 Edward H. Weitzen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:23
CPC Classifications
G; G03; G03H; G03H1/00; G03H1/02; G03H1/0276; G03H1/028; B; B44; B44B; B44B5/00; B44B5/0004; B44B5/0009; B44B5/009; B44C; B44C1/00; B44C1/24; B44C3/00; B44C3/08; B44C3/085; B44F; B44F1/00; B44F1/08; B44F1/10; G03H2250/00; G03H2250/12; G03H2270/00; G03H2270/10; G03H2270/13; G03H2270/52; Y; Y10; Y10S; Y10S29/00; Y10S29/037; Y10S359/00; Y10S359/90; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
108 words
A method of forming an embossed hologram on a first metal surface having a first hardness from a metal master surface relief pattern having a second hardness comparable or significantly less than said first hardness comprising the steps of: forming a layer of a second metal on said first metal surface, said second metal having a thickness in excess of a maximum depth of said master surface relief pattern, and having hardness much less than that of metal master, and compressing said second metal layer with said first metal layer and said metal master sufficient to cause second layer outside surface to substantially conform to surface relief pattern.
Claim 2
Independent Claim
108 words
A method of forming an embossed hologram on a first metal surface having a first hardness from a metal master surface relief pattern having a second hardness comparable or significantly less than said first hardness comprising the steps of: forming a layer of a second metal on said first metal surface, said second metal having a thickness in excess of a maximum depth of said master surface relief pattern, and having hardness much less than that of metal master, and compressing said second metal layer with said first metal layer and said metal master sufficient to cause second layer outside surface to substantially conform to surface relief pattern.
Claim 3
Dependent Claim
38 words
The method according to claim 1 wherein the step of compressing said second metal layer is performed at a temperature range in which said second metal has a yield strength substantially less than that of said metal master.
Claim 4
Dependent Claim
20 words
The method according to claim 2 wherein the step of compressing said second metal layer is performed at room temperature.
Claim 5
Dependent Claim
26 words
The method according to claim 2 wherein the step of compressing said second metal layer is performed at a temperature between -50° C. and 200° C.
Claim 6
Dependent Claim
12 words
The method according to claim 1 wherein said second metal is tin.
Claim 7
Dependent Claim
14 words
The method according to claim 1 wherein said second metal is a tin alloy.
Claim 8
Independent Claim
97 words
A method of forming an embossed diffraction pattern on a tin-plating portion of a metal comprising the steps of: forming a metal master surface relief pattern of the diffraction pattern; tin-plating at least one portion of the metal to a thickness sufficient to accommodate a maximum relief depth of said metal master; maintaining said tin-plating within a temperature range where said tin-plating has a yield strength substantially less than that of said metal master; and impressing said metal master surface relief pattern against said tin-plating portion to cause surface thereon to conform substantially to surface relief pattern.
Claim 9
Independent Claim
97 words
A method of forming an embossed diffraction pattern on a tin-plating portion of a metal comprising the steps of: forming a metal master surface relief pattern of the diffraction pattern; tin-plating at least one portion of the metal to a thickness sufficient to accommodate a maximum relief depth of said metal master; maintaining said tin-plating within a temperature range where said tin-plating has a yield strength substantially less than that of said metal master; and impressing said metal master surface relief pattern against said tin-plating portion to cause surface thereon to conform substantially to surface relief pattern.
Claim 10
Dependent Claim
13 words
The method according to claim 7 wherein said diffraction pattern is a hologram.
Claim 11
Dependent Claim
17 words
The method according to claim 7 wherein said temperature range is between -50° C. and 200° C.
Claim 12
Dependent Claim
15 words
The method according to claim 7 wherein said temperature range is substantially at room temperatures.
Claim 13
Independent Claim
95 words
A method of forming an embossed diffraction pattern on a tin can comprising the steps of: forming a metal master surface relief pattern of the diffraction pattern; selecting a tin can having a tin coating of thickness sufficient to accommodate a maximum relief depth of said metal master; maintaining said tin coating within a temperature range where said tin coating has a yield strength substantially less than that of said metal master; and impressing said metal master surface relief pattern against said tin coating to cause surface thereon to conform substantially to surface relief pattern.
Claim 14
Independent Claim
95 words
A method of forming an embossed diffraction pattern on a tin can comprising the steps of: forming a metal master surface relief pattern of the diffraction pattern; selecting a tin can having a tin coating of thickness sufficient to accommodate a maximum relief depth of said metal master; maintaining said tin coating within a temperature range where said tin coating has a yield strength substantially less than that of said metal master; and impressing said metal master surface relief pattern against said tin coating to cause surface thereon to conform substantially to surface relief pattern.
Claim 15
Dependent Claim
13 words
The method according to claim 11 wherein said diffraction pattern is a hologram.
Claim 16
Dependent Claim
17 words
The method according to claim 11 wherein said temperature range is between -50° C. and 200° C.
Claim 17
Dependent Claim
15 words
The method according to claim 11 wherein said temperature range is substantially at room temperatures.
References Cited (Backward Citations)
US4725111A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-12 | 1993-08-14 | 1994-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-12 | 1997-08-14 | 1998-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-12 | 2001-08-14 | 2002-02-13 | $7700.00 | Window Closed / Lapsed |