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Patent US3244711A successfully refreshed from Google Patents.
US3244711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
7-(s-triazinylamino)-3-aryl-coumarin brightening agents
Assignee: Bayer AG
•
Filing: 1965-05-12
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Granted: 1966-04-05
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Expires: 1985-05-12
Abstract
No abstract record available.
Inventors
- 👤 Berendes Otto
- 👤 Gold Heinrich
- 👤 Schellhammer Carl-Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:52
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3477; C08K5/3492; C08K5/3472; C08K5/3475; D; D06; D06L; D06L4/00; D06L4/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US2945033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |