US4400252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing metal decorative panel having colored depressions
Assignee: Toppan Inc
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Filing: 1981-07-13
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Granted: 1983-08-23
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Expires: 2001-07-13
Abstract
Abstract A metal decorative panel, wherein concave portions are etched with a desired pattern in the surface of a metal plate; a photosensitive synthetic resin layer is electrically deposited on the surface of said concave portions; a desired pattern is transcribed by sublimation on said electrically deposited synthetic resin layer, using sublimable dyes, and which displays high abrasion resistance and weatherability, and a beautiful decorative effect due to a synthetic combination of the partly colored portions of the surface of the metal plate and the exposed glossy portions thereof.
Inventors
- 👤 Hideru Ushijima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:14
CPC Classifications
B; B44; B44C; B44C1/00; B44C1/04; B44C1/16; B44C1/165; B44C1/17; B44C1/1712; B44C1/1716; B44C1/22; B44C1/227; B44C1/26; C; C25; C25D; C25D13/00; C25D13/22
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
134 words
A method of manufacturing a metal decorative panel having colored depressions, which comprises forming a pattern of electrically nonconducting resist layer on a surface of a metal panel, partially exposing the surface of the metal panel; etching the exposed metal surface to a prescribed depth; electrically depositing a synthetic resin layer only on the etched portion of the metal by dipping the patterned metal panel in an aqueous solution containing a paint for electric deposition, the thickness of the deposited synthetic resin layer being thinner than depth of the etched portion; washing off the resist layer by a solvent; pressing a sublimation transfer sheet on the surface of the metal panel under a temperature sufficient to transfer a pattern depicted on the transfer sheet onto the surface portions deposited with the synthetic resin only.
Claim 2
Independent Claim
134 words
A method of manufacturing a metal decorative panel having colored depressions, which comprises forming a pattern of electrically nonconducting resist layer on a surface of a metal panel, partially exposing the surface of the metal panel; etching the exposed metal surface to a prescribed depth; electrically depositing a synthetic resin layer only on the etched portion of the metal by dipping the patterned metal panel in an aqueous solution containing a paint for electric deposition, the thickness of the deposited synthetic resin layer being thinner than depth of the etched portion; washing off the resist layer by a solvent; pressing a sublimation transfer sheet on the surface of the metal panel under a temperature sufficient to transfer a pattern depicted on the transfer sheet onto the surface portions deposited with the synthetic resin only.
Claim 3
Dependent Claim
25 words
The method according to claim 1, wherein an overcoat of transparent synthetic resin is further supplied over the finished surface of the metal decorative panel.
Claim 4
Dependent Claim
25 words
The method according to claim 1, wherein a paint for electric deposition includes fine particles of pigment having a negative or positive potential in water.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-22 | 1987-02-21 | 1987-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-22 | 1991-02-21 | 1991-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-22 | 1995-02-21 | 1995-08-23 | $7700.00 | Window Closed / Lapsed |