US2687958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive layers for the printing industry
Assignee: Azoplate Corp
•
Filing: 1950-05-10
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Granted: 1954-08-31
•
Expires: 1970-05-10
Abstract
No abstract record available.
Inventors
- 👤 Neugebauer Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:38
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/008; G03F7/012; G03F7/0125; G03F7/016; G03F7/021; G03F7/0212; G03F7/038; G03F7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
LIGHT SENSITIVE MATERIAL SUITABLE FOR USE IN THE MANUFACTURE OF PRINTING PLATES COMPRSING A BASE AND A LIGHT SENSITIVE LAYER THEREON, SAID LAYER INCLUDING A POLYACRYLAMIDE IN WHICH BOTH HYDROGEN ATOMS OF THE NH2 GROUP ARE SUBSTITUTE BY ALKYL RADICALS AND AN AZIDO COMPOUND WHICH IS AN ALKALI SALT OF 4,4''-DIAZIDOSTIBENE-2,2'' DISULFONIC ACID.
Claim 2
Dependent Claim
53 words
LIGHT SENSITIVE MATERIAL SUITABLE FOR USE IN THE MANUFACTURE OF PRINTING PLATES COMPRSING A BASE AND A LIGHT SENSITIVE LAYER THEREON, SAID LAYER INCLUDING A POLYACRYLAMIDE IN WHICH BOTH HYDROGEN ATOMS OF THE NH2 GROUP ARE SUBSTITUTE BY ALKYL RADICALS AND AN AZIDO COMPOUND WHICH IS AN ALKALI SALT OF 4,4''-DIAZIDOSTIBENE-2,2'' DISULFONIC ACID.
References Cited (Backward Citations)
US1587269A
Cited
US1628279A
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US1845989A
Cited
US2184288A
Cited
FR886716A
Cited
CH232145A
Cited
US2461023A
Cited
US2522771A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-30 | 1958-03-01 | 1958-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-30 | 1962-03-01 | 1962-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-30 | 1966-03-01 | 1966-08-31 | $7700.00 | Window Closed / Lapsed |