Patent US3136671A successfully refreshed from Google Patents.
US3136671A
Expired / Lapsed
US
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Method of etching a printing plate
Assignee: Tasope Ltd
•
Filing: 1960-05-02
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Granted: 1964-06-09
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Expires: 1980-05-02
Abstract
No abstract record available.
Inventors
- 👤 Charles S Martz
- 👤 Monroe R Hillhouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:49
CPC Classifications
B; B41; B41C; B41C1/00; C; C23; C23F; C23F1/00; C23F1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
THE METHOD OF ETCHING THE EXPOSED METAL AREAS OF A METALLIC PRINTING PATE COATED WITH A PROTECTIVE RESIST COMPRISING THE STEPS OF SUBJECTING THE PLATE TO SUBMERSION FACE DOWN IN A POWDERLESS ETCHING BATH CONTAINING A PROTECTIVE BATH ADDITIVE, INCLINING THE PLATE RELATIVE TO THE BATH LEVEL, ROTATING THE PLATE, AND PASSING AIR IN THE FORM OF BUBBLES UPWARDLY THROUGH THE BATH SO AS TO IMJPINGE AND ROLL UPWARDLY THROUGH THE BATH SO AS TO IMPINGE AND ROLL UPWARDLY ON THE SURFACE OF THE INCLINED AND SUBMERGED PLATE.
Claim 2
Independent Claim
88 words
THE METHOD OF ETCHING THE EXPOSED METAL AREAS OF A METALLIC PRINTING PATE COATED WITH A PROTECTIVE RESIST COMPRISING THE STEPS OF SUBJECTING THE PLATE TO SUBMERSION FACE DOWN IN A POWDERLESS ETCHING BATH CONTAINING A PROTECTIVE BATH ADDITIVE, INCLINING THE PLATE RELATIVE TO THE BATH LEVEL, ROTATING THE PLATE, AND PASSING AIR IN THE FORM OF BUBBLES UPWARDLY THROUGH THE BATH SO AS TO IMJPINGE AND ROLL UPWARDLY THROUGH THE BATH SO AS TO IMPINGE AND ROLL UPWARDLY ON THE SURFACE OF THE INCLINED AND SUBMERGED PLATE.
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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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |