US2624764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of keto aldehydes
Assignee: Monsanto Chemicals Ltd
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Filing: 1949-12-27
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Granted: 1953-01-06
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Expires: 1969-12-27
Abstract
No abstract record available.
Inventors
- 👤 William S Emerson
- 👤 Jr Raymond I Longley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:01
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/56; C07C45/57; C07C45/60; C07C49/00; C07C49/04; C07C49/185; C07C49/20; C07C49/258; C07C49/29; C07C49/355
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
THE METHOD OF PREPARING KETONE-ALDEHYDES HAVING THE STRUCTURE:
Claim 2
Independent Claim
8 words
THE METHOD OF PREPARING KETONE-ALDEHYDES HAVING THE STRUCTURE:
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) | 1956-01-06 | 1956-07-07 | 1957-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-06 | 1960-07-07 | 1961-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-06 | 1964-07-07 | 1965-01-06 | $7700.00 | Window Closed / Lapsed |