US2542560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diazotypes on plastic surfaced carrier containing 5,5' diresorcinol
Assignee: GAF Chemicals Corp
•
Filing: 1949-11-10
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Granted: 1951-02-20
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Expires: 1969-11-10
Abstract
No abstract record available.
Inventors
- 👤 Fred W Neumann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:26
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
A DIAZOTYPE PHOTOPRINTING MATERIAL COMPRISING A PLASTIC SURFACED CARRIER AND SUPERIMPOSED ON THE PLASTIC SURFACE THEREOF A COATING CONTAINING 3,3'', 5,5''-TETRA HYDROXY BIPHENYL AND A LIGHT SENSITIVE DIAZO COMPOUND.
Claim 2
Dependent Claim
29 words
A DIAZOTYPE PHOTOPRINTING MATERIAL COMPRISING A PLASTIC SURFACED CARRIER AND SUPERIMPOSED ON THE PLASTIC SURFACE THEREOF A COATING CONTAINING 3,3'', 5,5''-TETRA HYDROXY BIPHENYL AND A LIGHT SENSITIVE DIAZO COMPOUND.
References Cited (Backward Citations)
US2432593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-19 | 1954-08-21 | 1955-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-19 | 1958-08-21 | 1959-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-19 | 1962-08-21 | 1963-02-20 | $7700.00 | Window Closed / Lapsed |