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US2954376A
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Polymethine dyes containing a 4-(hydroxymethyl)-or 4-(acetoxymethyl)-delta2-thiazoline or oxazoline nucleus, and preparation thereof
Assignee: Gevaert Photo Producten NV
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Filing: 1958-04-08
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Granted: 1960-09-27
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Expires: 1978-04-08
Abstract
No abstract record available.
Inventors
- 👤 Nys Jean Marie
- 👤 Libeer Marcel Jan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:59
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/10; C09B23/02; C09B23/14; C09B23/145; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2823207A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |