US3257941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means of making planographic printing plates
Assignee: Anken Chemical and Film Corp
•
Filing: 1960-04-04
•
Granted: 1966-06-28
•
Expires: 1980-04-04
Abstract
No abstract record available.
Inventors
- 👤 Wolfson Kurt
- 👤 Max Van Dam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:55
CPC Classifications
B; B41; B41N; B41N3/00; B41N3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A FOUNTAIN SOLUTION SUITABLE FOR USE WITH PRINTING PLATES PREPARED BY THE PHOTOGRAPHIC TRANSFER METHOD, COMPRISING A PLATE CONDITIONER OF TEH CHARACTER HEREIN DESCRIBED, DILUTED IN THE PROPORTION OF APPROXIMATELY ONE PART PLATE CONDITIONER TO FOUR PARTS OF WATER, SAID PLATE CONDITIONER COMPRISING AN AROMATIC ORGANIC ACID, A COPPER SALT AN D A SILVER COMPLEXING AGENT IN AN AQUEOUS ALCOHOL MEDIUM, SAID AROMATIC ORGANIC ACID BEING SELECTED FROM THE GROUP CONSISTING OF PHTHALDEHYDE ACID, PHTHALIC ACID AND PYROMELLITIC ACID.
Claim 2
Dependent Claim
79 words
A FOUNTAIN SOLUTION SUITABLE FOR USE WITH PRINTING PLATES PREPARED BY THE PHOTOGRAPHIC TRANSFER METHOD, COMPRISING A PLATE CONDITIONER OF TEH CHARACTER HEREIN DESCRIBED, DILUTED IN THE PROPORTION OF APPROXIMATELY ONE PART PLATE CONDITIONER TO FOUR PARTS OF WATER, SAID PLATE CONDITIONER COMPRISING AN AROMATIC ORGANIC ACID, A COPPER SALT AN D A SILVER COMPLEXING AGENT IN AN AQUEOUS ALCOHOL MEDIUM, SAID AROMATIC ORGANIC ACID BEING SELECTED FROM THE GROUP CONSISTING OF PHTHALDEHYDE ACID, PHTHALIC ACID AND PYROMELLITIC ACID.
References Cited (Backward Citations)
US2589313A
Cited
US2584030A
Cited
US2659674A
Cited
US2699994A
Cited
US2907273A
Cited
US2874045A
Cited
BE556753A
Cited
US3029727A
Cited
BE567153A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |