US3208849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planographic printing plate having a fibrous alumina coating thereon
Assignee: Unisys Corp
•
Filing: 1963-06-24
•
Granted: 1965-09-28
•
Expires: 1983-06-24
Abstract
No abstract record available.
Inventors
- 👤 Robert H Steinle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:50
CPC Classifications
B; B41; B41N; B41N3/00; B41N3/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A PRESENSITIZED PLANOGRAPHIC PLATE COMPRISING IN COMBINATION, A DEGREASED ALUMINUM SUBSTRATE, A HARD, ADHERENT, THIN FILM LAYER CONSISTING ESSENTIALLY OF WATER-INSOLUBLE FIBROUS ALUMINA HAVING THE BOEHMITE CRYSTAL LATTICE STRUCTURE ON THE PLATE, AND A LIGHT-SENSITIVE COATING ON THE LAYER OF SAID FIBROUS ALUMINA.
Claim 2
Dependent Claim
43 words
A PRESENSITIZED PLANOGRAPHIC PLATE COMPRISING IN COMBINATION, A DEGREASED ALUMINUM SUBSTRATE, A HARD, ADHERENT, THIN FILM LAYER CONSISTING ESSENTIALLY OF WATER-INSOLUBLE FIBROUS ALUMINA HAVING THE BOEHMITE CRYSTAL LATTICE STRUCTURE ON THE PLATE, AND A LIGHT-SENSITIVE COATING ON THE LAYER OF SAID FIBROUS ALUMINA.
References Cited (Backward Citations)
US2714066A
Cited
GB815471A
Cited
US2709655A
Cited
US2805159A
Cited
US3085008A
Cited
US2915475A
Cited
US2946683A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |