Patent US3555016A successfully refreshed from Google Patents.
US3555016A
Expired / Lapsed
US
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Water-insoluble styryl dyestuffs
Assignee: BASF Schweiz AG
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Filing: 1967-11-15
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Granted: 1971-01-12
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Expires: 1987-11-15
Abstract
Abstract STYRYL DYES CONTAINING A HETEROCYCLIC CARBAMATE GROUP BOUND VIA AN ALKYLAMINO BRIDGE TO THE COUPLING COMPONENT OF THE STYRYL MOIETY. THE DYES ARE PARTICULARLY USEFUL IN THE SO-CALLED THERMOSOL PROCESS.
Inventors
- 👤 Richard Peter
- 👤 Hans Joerg Angliker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:08
CPC Classifications
C; C07; C07D; C07D333/00; C07D333/02; C07D333/46; C07D333/48; C07D333/04; C07D333/26; C07D333/38; C09; C09B; C09B23/00; C09B23/14; C09B23/143
Claims Analysis
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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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |