US2926076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Etching
Assignee: Master Etching Machine Co
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Filing: 1957-05-14
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Granted: 1960-02-23
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Expires: 1977-05-14
Abstract
No abstract record available.
Inventors
- 👤 Guenst William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:58
CPC Classifications
B; B41; B41C; B41C1/00; B41C1/18; B41C1/188; C; C23; C23F; C23F1/00; C23F1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
THE METHOD OF ETCHING A CYLINDRICAL PRINTING PLATE, USING A CHEMICAL ETCHANT WHICH IS EFFECTIVE PRIMARILY ON DIRECT IMPINGEMENT, WHICH COMPRISES MAINTAINING A POOL OF ETCHANT, IMMERSING THE CYLINDER AT LEAST PARTIALLY BENEATH THE POOL WITH A PORTION OF THE CYLINDRICAL SURFACE UPWARDLY EXPOSED, DIRECTING A SPRAY OF ETCHANT ON THE UPWARDLY EXPOSED SURFACE OF THE CYLINDER, AND ROTATING THE CYLINDER.
Claim 2
Independent Claim
61 words
THE METHOD OF ETCHING A CYLINDRICAL PRINTING PLATE, USING A CHEMICAL ETCHANT WHICH IS EFFECTIVE PRIMARILY ON DIRECT IMPINGEMENT, WHICH COMPRISES MAINTAINING A POOL OF ETCHANT, IMMERSING THE CYLINDER AT LEAST PARTIALLY BENEATH THE POOL WITH A PORTION OF THE CYLINDRICAL SURFACE UPWARDLY EXPOSED, DIRECTING A SPRAY OF ETCHANT ON THE UPWARDLY EXPOSED SURFACE OF THE CYLINDER, AND ROTATING THE CYLINDER.
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) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |