Patent US3751319A successfully refreshed from Google Patents.
US3751319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making signs and other artistic works
Assignee: MOND INTERN Ltd
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Filing: 1971-03-08
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Granted: 1973-08-07
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Expires: 1991-03-08
Abstract
Abstract Signs and other artwork are made with a clear facing layer of polyester resin protecting one or more coloured pattern layers. The pattern layers are applied by silk screening after the facing layer has cured to at least a tack free condition. At the rear is applied a background layer of polyester resin and a stiff glass fibre backing layer.
Inventors
- 👤 P Green
- 👤 G Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:35
CPC Classifications
G; G09; G09F; G09F7/00; B; B29; B29C; B29C41/00; B29C41/02; B29C41/08; B29C41/22; B29C67/00; B29C67/08; B44; B44C; B44C3/00; B44C3/02; B44F; B44F1/00; B44F1/02; B44F1/04; B29K; B29K2063/00; B29K2067/00; B29K2105/00; B29K2105/06; B29K2105/12; B29K2995/00; B29K2995/0018; B29K2995/003; B29L; B29L2009/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
35 words
A method as claimed in claim 1, wherein the hardenable resin of each of the facing and background layers is an unsaturated polyester resin mixed with a cross-linking agent, a polymerization catalyst, and an accelerator.
Claim 2
Dependent Claim
40 words
A method as claimed in claim 1, wherein the background layer is an opaque layer having an exposed surface ovEr which said backing is applied after the exposed surface of the opaque layer has cured to a tack free condition.
Claim 3
Dependent Claim
29 words
A method as claimed in claim 3, wherein the hardenable resin is one that cures more rapidly when air is excluded, and the backing and mould exclude air therefrom.
Claim 4
Dependent Claim
25 words
A method as claimed in claim 1, wherein the intermediate layer is applied by silk screening without waiting for complete curing of said exposed surface.
Claim 5
Dependent Claim
31 words
A method as claimed in claim 5 wherein a plurality of intermediate layers of different colours are successively applied by silk screening to said surface before the background layer is applied.
Claim 6
Dependent Claim
49 words
A method as claimed in claim 6 wherein each intermediate layer comprises polyester resin mixed with a crosslinking agent and a polymerization catalyst, and in which a subsequent intermediate layer is applied only after the preceding layer has cured sufficiently that a silk screen will not adhere to it.
Claim 7
Dependent Claim
24 words
A method as claimed in claim 6 wherein each intermediate layer comprises an acrylic lacquer which is dried before the next layer is applied.
Claim 8
Dependent Claim
17 words
A method as claimed in claim 8 wherein the lacquer comprises cellulose acetate butyrate modified acrylic lacquer.
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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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |