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US2992226A
Expired / Lapsed
US
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Certain 2, 5-bis (fluoroalkyl) 1, 3, 4-oxadiazoles and thiadiazoles
Assignee: EIDP Inc
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Filing: 1959-12-07
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Granted: 1961-07-11
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Expires: 1979-12-07
Abstract
No abstract record available.
Inventors
- 👤 William J Chambers
- 👤 Donald D Coffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:23
CPC Classifications
C; C07; C07D; C07D271/00; C07D271/02; C07D271/10; C07D285/00; C07D285/01; C07D285/02; C07D285/04; C07D285/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE1067439B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |