US3330743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of manufacturing aluminumbase offset printing plates
Assignee: Individual
•
Filing: 1963-06-10
•
Granted: 1967-07-11
•
Expires: 1983-06-10
Abstract
No abstract record available.
Inventors
- 👤 Jestl Karl
- 👤 Postrihac Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:34
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/02; C25D11/04; C25D11/18; C25D11/24; C23; C23G; C23G1/00; C23G1/02; C23G1/12; C23G1/125; C25F; C25F1/00; C25F1/02; C25F1/04; C25F3/00; C25F3/02; C25F3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A PROCESS OF MANUFACTURING OFFSET PRINTING PLATES, WHICH COMPRISES THE STEPS OF: (A) ETCHING AN ALUMINUM-BASE PLATEE WITH AN ACID PICKLING SOLUTION; (B) UNIFORMLY ROUGHENING THE PRETREATED PLATE BY AN ALTERNATING CURRENT ELECTROLYTE TREATMENT IN AN ELECTROLYTE WHICH CONTAINS NITRIC ACID, SPENT SULFITE LIQUOR AND AT LEAST ONE AROMATIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF BENZALDEHYDE, VANILLIN, ACETOPHENONE, BENZOPHENONE, CURCUMIN, AND OF PINE NEEDLE OIL; (C) ANODIZING THE ROUGHENED PLATE IN A DIRECT CURRENT PROCESS ANODIZING ELECTROLYTE; (D) TREATING THE ANODIZED PLATE WITH AN AQUEOUS RINSING BATH WHICH CONTAINS SPENT SULFITE LIQUOR AND AT LEAST ONE SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF BENZALDEHYDE, VANILLIN, ACETOPHENONE, BENZOPHENONE, CURCUMIN, AND OF PINE NEEDLE OIL, AND THEN DRYING THE PLATE.
Claim 2
Dependent Claim
119 words
A PROCESS OF MANUFACTURING OFFSET PRINTING PLATES, WHICH COMPRISES THE STEPS OF: (A) ETCHING AN ALUMINUM-BASE PLATEE WITH AN ACID PICKLING SOLUTION; (B) UNIFORMLY ROUGHENING THE PRETREATED PLATE BY AN ALTERNATING CURRENT ELECTROLYTE TREATMENT IN AN ELECTROLYTE WHICH CONTAINS NITRIC ACID, SPENT SULFITE LIQUOR AND AT LEAST ONE AROMATIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF BENZALDEHYDE, VANILLIN, ACETOPHENONE, BENZOPHENONE, CURCUMIN, AND OF PINE NEEDLE OIL; (C) ANODIZING THE ROUGHENED PLATE IN A DIRECT CURRENT PROCESS ANODIZING ELECTROLYTE; (D) TREATING THE ANODIZED PLATE WITH AN AQUEOUS RINSING BATH WHICH CONTAINS SPENT SULFITE LIQUOR AND AT LEAST ONE SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF BENZALDEHYDE, VANILLIN, ACETOPHENONE, BENZOPHENONE, CURCUMIN, AND OF PINE NEEDLE OIL, AND THEN DRYING THE 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) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |