US2689873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkenyl halides containing a quaternary carbon atom
Assignee: Rohm and Haas Co
•
Filing: 1950-12-01
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Granted: 1954-09-21
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Expires: 1970-12-01
Abstract
No abstract record available.
Inventors
- 👤 Warren D Niederhauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:27
CPC Classifications
C; C07; C07C; C07C21/00; C07C21/02; C07C21/04; C07C17/00; C07C17/26; C07C17/272; C07C17/275
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR824909A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |