Patent US2704512A successfully refreshed from Google Patents.
US2704512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal printing plate and method of
Assignee: —
•
Filing: —
•
Granted: 1955-03-22
•
Expires: 1972-03-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:56
CPC Classifications
B; B41; B41N; B41N1/00; B41N1/04; B41N1/06; Y; Y10; Y10S; Y10S205/00; Y10S205/921; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9335; Y10S428/934; Y10S428/935; Y10T; Y10T428/00; Y10T428/12; Y10T428/12389; Y10T428/12396; Y10T428/12493; Y10T428/12535; Y10T428/12556; Y10T428/12569; Y10T428/12729; Y10T428/12771; Y10T428/12785; Y10T428/12792; Y10T428/12993
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
THE METHOD OF PRODUCING A RELIEF-IMAGE METALLIC PRINTING PLATE WHICH COMPRISES FORMING A SKIN OF ZINC OF UNIFORM THICKNESS IN THE ORDER OF .003 INCH TO .0003 INCH ON A RELATIVELY THICK MAGNESIUM BASE METAL PLATE, FORMING AN ACID RESISTANT NON-METALLIC PROTECTIVE FILM COATING ON SELECTED AREAS OF THE ZINC SURFACE SKIN AND CONSTITUTING A RESIST-IMAGE AND LEAVING BACKGROUND AREAS OF SAID SURFACE UNPROTECTED, REMOVING THE SKIN OF ZINC FROM THE UNPROTECTED AREAS, AND SUBJECTING THE EXPOSED PORTIONS OF THE BASE METAL PLATE TO ACID ACTION TO ETCH AWAY THE BASE METAL TO THE REQUIRED DEPTH AND FORM A RELIEF-PRINTING IMAGE HAVING A ZINC SKIN ON THE PRINTING SURFACE THEREOF.
Claim 2
Independent Claim
110 words
THE METHOD OF PRODUCING A RELIEF-IMAGE METALLIC PRINTING PLATE WHICH COMPRISES FORMING A SKIN OF ZINC OF UNIFORM THICKNESS IN THE ORDER OF .003 INCH TO .0003 INCH ON A RELATIVELY THICK MAGNESIUM BASE METAL PLATE, FORMING AN ACID RESISTANT NON-METALLIC PROTECTIVE FILM COATING ON SELECTED AREAS OF THE ZINC SURFACE SKIN AND CONSTITUTING A RESIST-IMAGE AND LEAVING BACKGROUND AREAS OF SAID SURFACE UNPROTECTED, REMOVING THE SKIN OF ZINC FROM THE UNPROTECTED AREAS, AND SUBJECTING THE EXPOSED PORTIONS OF THE BASE METAL PLATE TO ACID ACTION TO ETCH AWAY THE BASE METAL TO THE REQUIRED DEPTH AND FORM A RELIEF-PRINTING IMAGE HAVING A ZINC SKIN ON THE PRINTING SURFACE THEREOF.
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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) | 1958-03-21 | 1958-09-20 | 1959-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-21 | 1962-09-20 | 1963-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-21 | 1966-09-20 | 1967-03-22 | $7700.00 | Window Closed / Lapsed |