US3471293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antihalation and filter dyes for photographic materials
Assignee: Agfa Gevaert AG
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Filing: 1968-09-04
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Granted: 1969-10-07
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Expires: 1988-09-04
Abstract
No abstract record available.
Inventors
- 👤 Hans Ohlschlager
- 👤 Oskar Riester
- 👤 Herbert Muller
- 👤 Erich Reckziegel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:12
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/46; C07D239/60; C07D239/66; C09; C09B; C09B23/00; C09B23/02; C09B23/06; G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C1/8255; G03C1/83; G03C1/832
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |