US2394067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sensitizing dyestuffs and dyestuff intermediates
Assignee: Ilford Imaging UK Ltd
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Filing: 1941-08-21
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Granted: 1946-02-05
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Expires: 1961-08-21
Abstract
No abstract record available.
Inventors
- 👤 Kendall John David
- 👤 Fry Douglas James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:13
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/52; C07D263/54; C07D263/58; C07D277/00; C07D277/60; C07D277/62; C07D277/68; C07D277/82; C07D277/84; C09; C09B; C09B23/00; C09B23/16; C09B23/162; C09B23/164; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12; G03C1/122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-02-04 | 1949-08-06 | 1950-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-02-04 | 1953-08-06 | 1954-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-02-04 | 1957-08-06 | 1958-02-05 | $7700.00 | Window Closed / Lapsed |