Patent US3560519A successfully refreshed from Google Patents.
US3560519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aromatic mono(nitrile carbonates)
Assignee: Sinclair Research Inc
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Filing: 1969-03-28
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Granted: 1971-02-02
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Expires: 1989-03-28
Abstract
Abstract COMPOUNDS OF THE FORMULA 5-R-1,3,4-DIOXAZOL-2-ONE WHEREIN R IS AN AROMATIC HYDROCARBON RADICAL OF 1 TO 3 AROMATIC RINGS WHICH CAN BE SUBSTITUTED WITH, FOR INSTANCE, HALOGEN, NITRO, OR ALKOXY, E.G., METHOXY, GROUPS EXCEPT THAT WHEN R IS MONOCYCLIC, R IS SUBSTITUTED ON THE RING WITH AT LEAST ONE OF THE AFOREMENTIONED GROUPS. THE COMPOUNDS CAN BE MADE BY REACTING THE CORRESPONDING HYDROXAMIC ACIDS AND PHOSGENE.
Inventors
- 👤 Emmett H Burk Jr
- 👤 Donald D Carlos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:07
CPC Classifications
C; C07; C07D; C07D273/00
Claims Analysis
Total Claims: 0
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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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |