US2249987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of derivatives of aryl substituted mono-olefins
Assignee: Distillers Co Yeast Ltd
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Filing: 1938-08-01
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Granted: 1941-07-22
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Expires: 1958-08-01
Abstract
No abstract record available.
Inventors
- 👤 Stanley Herbert Muggleton
- 👤 Dymock John Blair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:17
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/442; C; C07; C07C; C07C2/00; C07C2/02; C07C2/42; C07C2527/00; C07C2527/02; C07C2527/053; C07C2527/054; C07C2531/00; C07C2531/02; C07C2602/00; C07C2602/02; C07C2602/04; C07C2602/08
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) | 1944-07-21 | 1945-01-20 | 1945-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-07-21 | 1949-01-20 | 1949-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-07-21 | 1953-01-20 | 1953-07-22 | $7700.00 | Window Closed / Lapsed |