US3275440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for developing photosensitized anodized aluminum plates
Assignee: Horizons Research Inc
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Filing: 1963-08-12
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Granted: 1966-09-27
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Expires: 1983-08-12
Abstract
No abstract record available.
Inventors
- 👤 Robert A Kempe
- 👤 Kazimierz R Szczepaniak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:39
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/77; G03C5/00; G03C5/26; G03C5/29; G03C5/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
IN THE MANUFACTURE OF AN ALUMINUM PHOTOGRAPHIC PLATE IN A METHOD WHICH INCLUDES ANODIZING THE SURFACE OF A CLEAN ALUMINUM PLATE TO PROVIDE A POROUS, DURABLE AND TRANSPARENT LAYER OF ALUMINUM OXIDE THEREON, AND THEREAFTER IMPREGNATING SAID POROUS OXIDE LAYER WITH A PHOTOSENSITIVE COMPOSITION AND THEN IMAGEWISE EXPOSING THE RESULTING PHOTOSENSITIVE ARTICLE, THE IMPROVEMENT WHICH COMPRISES DEVELOPING A VISIBLE IMAGE ON THE EXPOSED PHOTOSENSITIZED PLATE BY IMMERSING THE SAME IN A DEVELOPER SOLUTION HAVING A COMPOSITION CONSISTING ESSENTIALLY OF:
Claim 2
Dependent Claim
79 words
IN THE MANUFACTURE OF AN ALUMINUM PHOTOGRAPHIC PLATE IN A METHOD WHICH INCLUDES ANODIZING THE SURFACE OF A CLEAN ALUMINUM PLATE TO PROVIDE A POROUS, DURABLE AND TRANSPARENT LAYER OF ALUMINUM OXIDE THEREON, AND THEREAFTER IMPREGNATING SAID POROUS OXIDE LAYER WITH A PHOTOSENSITIVE COMPOSITION AND THEN IMAGEWISE EXPOSING THE RESULTING PHOTOSENSITIVE ARTICLE, THE IMPROVEMENT WHICH COMPRISES DEVELOPING A VISIBLE IMAGE ON THE EXPOSED PHOTOSENSITIZED PLATE BY IMMERSING THE SAME IN A DEVELOPER SOLUTION HAVING A COMPOSITION CONSISTING ESSENTIALLY OF:
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |