US2465760A
Expired / Lapsed
US
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Diazotype materials derived from aryl diazo sulfones
Assignee: Gen Anlline & Film Corp
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Filing: 1947-07-02
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Granted: 1949-03-29
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Expires: 1967-07-02
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Sprung
- 👤 Willy A Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:46
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2117451A
Cited
US1628279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-28 | 1952-09-27 | 1953-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-28 | 1956-09-27 | 1957-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-28 | 1960-09-27 | 1961-03-29 | $7700.00 | Window Closed / Lapsed |