US3051603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Descumming preparation and process
Assignee: Individual
•
Filing: 1959-07-14
•
Granted: 1962-08-28
•
Expires: 1979-07-14
Abstract
No abstract record available.
Inventors
- 👤 Michaels James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:02
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/26; G03F7/40; G03F7/405; C; C23; C23G; C23G1/00; C23G1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
IN COMBINATION WITH THE PROCESS OF DEVELOPING A PHOTOGRAPHIC PLATE AND THEREAFTER ETCHING SAID PLATE, THE INTERMEDIATE PROCESS OF REMOVING THE SCUM FORMED BY THE DEVELOPING FROM THE DEVELOPED PLATE PRIOR TO THE ETCHING STEP, SAID DESCUMMING PROCESS CONSISTING OF A SINGLE TREATMENT OF THE PRINTED PLATE BY A SINGLE PREPARATION CONSISTING ESSENTIALLY OF AN AQUEOUS SOLUTION OF THE AMMONIUM PERSULFATE, SAID TREATMENT CONSISTING OF THE STEPS OF PREPARING THE AQUEOUS SOLUTION OF AMMONIUM PERSULFATE, POURING THE SOLUTION UPON STHE PLATE, SPREADING THE SOLUTION OVER THE PRINTED SURFACE OF THE PLATE, AND THEN RINSING OFF THE SOLUTION.
Claim 2
Dependent Claim
97 words
IN COMBINATION WITH THE PROCESS OF DEVELOPING A PHOTOGRAPHIC PLATE AND THEREAFTER ETCHING SAID PLATE, THE INTERMEDIATE PROCESS OF REMOVING THE SCUM FORMED BY THE DEVELOPING FROM THE DEVELOPED PLATE PRIOR TO THE ETCHING STEP, SAID DESCUMMING PROCESS CONSISTING OF A SINGLE TREATMENT OF THE PRINTED PLATE BY A SINGLE PREPARATION CONSISTING ESSENTIALLY OF AN AQUEOUS SOLUTION OF THE AMMONIUM PERSULFATE, SAID TREATMENT CONSISTING OF THE STEPS OF PREPARING THE AQUEOUS SOLUTION OF AMMONIUM PERSULFATE, POURING THE SOLUTION UPON STHE PLATE, SPREADING THE SOLUTION OVER THE PRINTED SURFACE OF THE PLATE, AND THEN RINSING OFF THE SOLUTION.
References Cited (Backward Citations)
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Cited
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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) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |