US2501144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unsaturated aldehydes and preparation thereof
Assignee: Hercules Powder Co
•
Filing: 1947-12-19
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Granted: 1950-03-21
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Expires: 1967-12-19
Abstract
No abstract record available.
Inventors
- 👤 Robert H Saunders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:48
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/51; C07C45/511; C07C45/515; C07C47/00; C07C47/20; C07C47/21
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
THE METHOD OF PRODUCING AN ALKENYL-SUBSTITUTED UNSATURATED ALDEHYDE OF THE FORMULA
Claim 2
Independent Claim
11 words
THE METHOD OF PRODUCING AN ALKENYL-SUBSTITUTED UNSATURATED ALDEHYDE OF THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |