US3544325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic elements containing styryl dyestuffs
Assignee: Agfa Gevaert NV
•
Filing: 1967-09-08
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Granted: 1970-12-01
•
Expires: 1987-09-08
Abstract
No abstract record available.
Inventors
- 👤 Henri Depoorter
- 👤 Theofiel Hubert Ghys
- 👤 Marcel Jan Libeer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:56
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/02; C07D231/10; C07D231/14; C07D231/18; C07D231/20; C07D231/22; C07D231/26; C09; C09B; C09B23/00; C09B23/02; C09B23/04; C09B23/06; G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C1/83
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3389994A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |