Patent US3619385A successfully refreshed from Google Patents.
US3619385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for manufacturing an article with a polychrome picture imposed on the surface thereof
Assignee: Individual
•
Filing: 1968-02-05
•
Granted: 1971-11-09
•
Expires: 1988-02-05
Abstract
Abstract A polychrome image is produced on the surface of an article by depositing on a solid dielectric layer a thin film of a unilaterally conducting metal or alloy thereof to a thickness of at least 500 A followed by breaking the film into separate areas in conformity with the shape of the picture to be reproduced, the areas being electrically insulated from one another. Thereafter the areas are subjected to selective anodic oxidation at a constant current density of less than 10 ma./cm.2 and at working voltages which vary from one area to another in a range of 5 to 250 volts.
Inventors
- 👤 Nadezhda Vasilievna Rjumshina
- 👤 Gennady Fedorovich Vasiliev
- 👤 Georgy Markovich Vozlinsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:53
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/02; C25D11/022; C25D11/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
A process according to claim 1, wherein the electric insulation of said areas from one another is effected by providing contour clearances therebetween.
Claim 2
Dependent Claim
74 words
A process according to claim 1, wherein said film is tantalum and anodic oxidation is conducted at a current density of 0.5 to 2 ma./cm.2 in a 0.01M solution of ammonium tartrate, the following voltages being applied to obtain the colors specified hereinbelow: brown 22 to 27 V blue 33 to 36 V light blue 40 to 45 V yellow 65 to 73 V red 93 to 98 V green 115 to 150 V.
References Cited (Backward Citations)
US2059053A
Cited
US2934480A
Cited
US3075896A
Cited
US3261082A
Cited
US3284321A
Cited
US3365378A
Cited
US3450606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |